Stock Options and Warrants - Additional Information (Detail) - USD ($)
|
|
|
|
|
|
|
|
|
|
|
1 Months Ended |
3 Months Ended |
6 Months Ended |
12 Months Ended |
|
|
|
|
Dec. 29, 2017 |
Dec. 21, 2017 |
Nov. 30, 2017 |
Nov. 24, 2017 |
Oct. 11, 2017 |
Sep. 08, 2017 |
Jun. 14, 2017 |
Feb. 28, 2017 |
Jan. 31, 2017 |
Dec. 12, 2016 |
Dec. 20, 2017 |
Sep. 30, 2016 |
Nov. 30, 2017 |
Nov. 30, 2016 |
Nov. 30, 2017 |
Nov. 30, 2016 |
May 31, 2017 |
Aug. 24, 2017 |
Jun. 19, 2017 |
Mar. 31, 2016 |
Feb. 28, 2015 |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Stock options grant date fair value |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 0.25
|
|
|
|
|
|
|
| Common Stock issued |
|
|
165,135,154
|
|
|
|
|
|
|
|
|
|
165,135,154
|
|
165,135,154
|
|
149,468,244
|
|
|
|
|
| Proceeds from Issuance of Common Stock |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 8,990,000
|
|
|
|
|
|
|
| Inducement interest related to warrant extensions |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
826,252
|
|
|
|
|
|
|
| Compensation expense |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 529,617
|
$ 687,634
|
|
|
|
|
|
| Convertible Notes 2017 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Warrants to purchase common shares, shares |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
383,333
|
|
|
| Minimum | Convertible Notes 2017 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Exercise price of warrants, per share |
|
|
|
|
|
|
$ 1.00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Warrant covering common stock shares purchased, percentage |
|
|
|
|
|
|
25.00%
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Maximum | Convertible Notes 2017 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Exercise price of warrants, per share |
|
|
|
|
|
|
$ 1.35
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Warrant covering common stock shares purchased, percentage |
|
|
|
|
|
|
50.00%
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Placement Agent |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Warrants to purchase common shares, shares |
|
|
350,766
|
|
150,461
|
213,573
|
|
453,652
|
122,799
|
|
|
1,066,667
|
350,766
|
|
350,766
|
|
|
|
|
|
|
| Term of warrants |
|
|
|
|
5 years
|
5 years
|
|
5 years
|
5 years
|
|
|
5 years
|
|
|
5 years
|
|
|
|
|
|
|
| Exercise price of warrants, per share |
|
|
$ 0.825
|
|
$ 0.715
|
$ 0.825
|
|
$ 0.825
|
$ 0.825
|
|
|
$ 0.825
|
$ 0.825
|
|
$ 0.825
|
|
|
|
|
|
|
| Investor |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Exercise price of warrants, per share |
|
|
$ 0.50
|
|
|
|
|
|
|
|
|
|
$ 0.50
|
|
$ 0.50
|
|
|
|
|
|
|
| Common Stock issued |
|
|
3,295,000
|
|
|
|
|
|
|
|
|
|
3,295,000
|
|
3,295,000
|
|
|
|
|
|
|
| Proceeds from Issuance of Common Stock |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 1,600,000
|
|
|
|
|
|
|
| Securities Purchase Agreement |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Warrants to purchase common shares, shares |
|
|
3,258,990
|
|
|
|
|
|
|
2,000,000
|
|
6,666,667
|
3,258,990
|
|
3,258,990
|
|
|
|
|
|
|
| Term of warrants |
|
|
|
|
|
|
|
|
|
5 years
|
|
5 years
|
|
|
5 years
|
|
|
|
|
|
|
| Exercise price of warrants, per share |
|
|
$ 1.00
|
|
|
|
|
|
|
$ 1.00
|
|
$ 1.00
|
$ 1.00
|
|
$ 1.00
|
|
|
|
|
|
|
| Proceeds from Issuance of Common Stock |
|
|
|
|
|
|
|
|
|
$ 3,000,000
|
|
$ 9,000,000
|
|
|
|
|
|
|
|
|
|
| Subscription Agreements |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Warrants to purchase common shares, shares |
|
|
|
|
940,380
|
1,668,163
|
|
2,835,323
|
767,498
|
|
|
|
|
|
|
|
|
|
|
|
|
| Term of warrants |
|
|
|
|
5 years
|
5 years
|
|
5 years
|
5 years
|
|
|
|
|
|
|
|
|
|
|
|
|
| Exercise price of warrants, per share |
|
|
|
|
$ 0.75
|
$ 1.00
|
|
$ 1.00
|
$ 1.00
|
|
|
|
|
|
|
|
|
|
|
|
|
| Proceeds from Issuance of Common Stock |
|
|
|
|
$ 1,100,000
|
$ 2,300,000
|
|
$ 3,800,000
|
$ 1,000,000
|
|
|
|
|
|
|
|
|
|
|
|
|
| Make-Whole Securities |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Warrants to purchase common shares, shares |
|
|
251,504
|
|
|
|
|
|
|
|
|
|
251,504
|
|
251,504
|
|
|
|
|
|
|
| Term of warrants |
|
|
5 years
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Exercise price of warrants, per share |
|
|
$ 0.75
|
|
|
|
|
|
|
|
|
|
$ 0.75
|
|
$ 0.75
|
|
|
|
|
|
|
| Make-Whole Securities | Placement Agent |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Warrants to purchase common shares, shares |
|
|
26,702
|
|
|
|
|
|
|
|
|
|
26,702
|
|
26,702
|
|
|
|
|
|
|
| Term of warrants |
|
|
5 years
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Exercise price of warrants, per share |
|
|
$ 0.715
|
|
|
|
|
|
|
|
|
|
$ 0.715
|
|
$ 0.715
|
|
|
|
|
|
|
| Before Inducement | Investor |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Exercise price of warrants, per share |
|
|
$ 1.00
|
|
|
|
|
|
|
|
|
|
$ 1.00
|
|
$ 1.00
|
|
|
|
|
|
|
| Class of warrant or right expiration date |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Jun. 30, 2017
|
|
|
|
|
|
|
| Private Equity Offering |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Warrants to purchase common shares, shares |
|
|
6,651,800
|
|
|
|
|
|
|
|
|
|
6,651,800
|
|
6,651,800
|
|
|
|
|
|
|
| Term of warrants |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
5 years
|
|
5 years
|
|
|
|
|
| Exercise price of warrants, per share |
|
|
$ 0.75
|
|
|
|
|
|
|
|
|
|
$ 0.75
|
|
$ 0.75
|
|
$ 1.00
|
|
|
|
|
| Warrant covering common stock shares purchased, percentage |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
100.00%
|
|
25.00%
|
|
|
|
|
| Private Equity Offering | Subsequent Event |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Warrants to purchase common shares, shares |
1,777,638
|
|
|
|
|
|
|
|
|
|
2,948,666
|
|
|
|
|
|
|
|
|
|
|
| Term of warrants |
5 years
|
|
|
|
|
|
|
|
|
|
5 years
|
|
|
|
|
|
|
|
|
|
|
| Exercise price of warrants, per share |
$ 0.75
|
|
|
|
|
|
|
|
|
|
$ 0.75
|
|
|
|
|
|
|
|
|
|
|
| Warrant covering common stock shares purchased, percentage |
100.00%
|
|
|
|
|
|
|
|
|
|
100.00%
|
|
|
|
|
|
|
|
|
|
|
| Private Equity Offering | Placement Agent |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Warrants to purchase common shares, shares |
|
|
452,180
|
|
|
|
|
|
|
|
|
|
452,180
|
|
452,180
|
|
|
|
|
|
|
| Term of warrants |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
5 years
|
|
|
|
|
|
|
| Exercise price of warrants, per share |
|
|
$ 0.55
|
|
|
|
|
|
|
|
|
|
$ 0.55
|
|
$ 0.55
|
|
|
|
|
|
|
| Private Equity Offering | Placement Agent | Subsequent Event |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Warrants to purchase common shares, shares |
177,764
|
|
|
|
|
|
|
|
|
|
243,667
|
|
|
|
|
|
|
|
|
|
|
| Exercise price of warrants, per share |
$ 0.55
|
|
|
|
|
|
|
|
|
|
$ 0.55
|
|
|
|
|
|
|
|
|
|
|
| 2012 Equity Incentive Plan |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Compensation expense |
|
|
|
|
|
|
|
|
|
|
|
|
$ 275,000
|
$ 335,000
|
$ 530,000
|
688,000
|
|
|
|
|
|
| Grant date fair value of options and warrants |
|
|
|
|
|
|
|
|
|
|
|
|
127,000
|
$ 279,000
|
574,000
|
$ 530,000
|
|
|
|
|
|
| Unrecognized compensation expense |
|
|
$ 1,000,000
|
|
|
|
|
|
|
|
|
|
$ 1,000,000
|
|
$ 1,000,000
|
|
|
|
|
|
|
| Weighted average period over which unrecognized compensation expense is expected to be recognized |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1 year 5 months 5 days
|
|
|
|
|
|
|
| 2012 Equity Incentive Plan | Stock Options |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Shares available for future stock-based grants |
|
|
5,693,807
|
|
|
|
|
|
|
|
|
|
5,693,807
|
|
5,693,807
|
|
|
|
|
|
|
| 2012 Equity Incentive Plan | Stock Options | Before Amendment |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Shares available for future issuance |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
7,000,000
|
|
5,000,000
|
3,000,000
|
| 2012 Equity Incentive Plan | Stock Options | After Amendment |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Shares available for future issuance |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
15,000,000
|
|
7,000,000
|
5,000,000
|
| 2012 Equity Incentive Plan | Stock Options | Directors |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Stock options granted, shares |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
450,000
|
|
|
|
|
|
|
| Stock options granted, exercise price |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 0.57
|
|
|
|
|
|
|
| Stock options grant date fair value |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 0.36
|
|
|
|
|
|
|
| 2012 Equity Incentive Plan | Stock Options | Directors | Minimum |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Vesting period |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1 year
|
|
|
|
|
|
|
| 2012 Equity Incentive Plan | Stock Options | Directors | Maximum |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Vesting period |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
10 years
|
|
|
|
|
|
|
| 2012 Equity Incentive Plan | Stock Options | Chief Science Officer |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Stock options granted, shares |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
600,000
|
|
|
|
|
|
|
| Stock options granted, exercise price |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 0.57
|
|
|
|
|
|
|
| Vesting period |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3 years
|
|
|
|
|
|
|
| Stock options grant date fair value |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 0.35
|
|
|
|
|
|
|
| Stock options, term |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
10 years
|
|
|
|
|
|
|
| 2012 Equity Incentive Plan | Stock Options | Executive Management and Employees |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Stock options granted, shares |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
800,000
|
|
|
|
|
|
|
| Vesting period |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3 years
|
|
|
|
|
|
|
| Stock options grant date fair value |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 0.35
|
|
|
|
|
|
|
| Stock options, term |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
10 years
|
|
|
|
|
|
|
| Stock options granted, exercise price, lower range limit |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 0.57
|
|
|
|
|
|
|
| 2012 Equity Incentive Plan | Warrants (equity allocation) | Consultant 1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Vesting period |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
5 years
|
|
|
|
|
|
|
| Warrants granted, shares |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
200,000
|
|
|
|
|
|
|
| Warrants granted, exercise price |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 0.64
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
25.00%
|
|
|
|
|
|
|
| Warrants grant date fair value |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 0.26
|
|
|
|
|
|
|
| 2012 Equity Incentive Plan | Warrants (equity allocation) | Consultant 2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Vesting period |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
5 years
|
|
|
|
|
|
|
| Warrants granted, shares |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
100,000
|
|
|
|
|
|
|
| Warrants granted, exercise price |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 0.75
|
|
|
|
|
|
|
| Warrants grant date fair value |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 0.29
|
|
|
|
|
|
|
| 2012 Equity Incentive Plan | Warrants (equity allocation) | December 31, 2017 | Consultant 1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
25.00%
|
|
|
|
|
|
|
| 2012 Equity Incentive Plan | Warrants (equity allocation) | Milestone | Consultant 1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
50.00%
|
|
|
|
|
|
|
| Offer to Amend and Exercise |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Warrants to purchase common shares, shares |
|
|
|
51,090,113
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Exercise price of warrants, per share |
|
|
|
$ 0.50
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Offer to Amend and Exercise | Subsequent Event |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Class of warrant or right expiration date |
|
Jan. 26, 2018
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Offer to Amend and Exercise | Minimum |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Exercise price of warrants, per share |
|
|
|
$ 0.50
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Expiration of tender offer |
|
|
|
2018-10
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Offer to Amend and Exercise | Maximum |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Exercise price of warrants, per share |
|
|
|
$ 1.35
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Expiration of tender offer |
|
|
|
2022-10
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|