Stockholders' Deficit - Additional Information (Detail)
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1 Months Ended |
2 Months Ended |
12 Months Ended |
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Oct. 31, 2020 |
Oct. 14, 2020
shares
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Sep. 30, 2019
shares
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Jan. 09, 2019
USD ($)
$ / shares
shares
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Jan. 31, 2018
$ / shares
shares
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Dec. 31, 2020
USD ($)
shares
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Sep. 30, 2020
USD ($)
shares
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Aug. 31, 2020
USD ($)
shares
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Jun. 30, 2020
USD ($)
Director
shares
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Apr. 30, 2020
USD ($)
shares
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Mar. 31, 2020
USD ($)
ConvertibleNote
$ / shares
shares
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Oct. 31, 2019
USD ($)
$ / shares
shares
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Mar. 31, 2019
USD ($)
$ / shares
shares
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Feb. 29, 2020
shares
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Jan. 30, 2021
USD ($)
FormerExecutive
shares
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Dec. 31, 2019
USD ($)
$ / shares
shares
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Feb. 01, 2020
USD ($)
shares
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Nov. 30, 2019
shares
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Dec. 31, 2018
shares
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Jun. 30, 2015
shares
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Preferred stock, shares authorized |
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10,000,000
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10,000,000
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| Preferred stock, shares outstanding |
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2,000
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2,000
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| Common stock, shares authorized |
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150,000,000
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150,000,000
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| Common stock, shares outstanding |
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11,465,000
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4,378,000
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| Amount owed by vendor | $ |
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$ 400,000
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| Warrants exercisable into shares of common stock |
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57,029
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| Exercise price of warrants, per share | $ / shares |
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$ 91.50
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| Warrants exercisable expiration date |
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Jan. 06, 2021
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| Expected life |
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5 years
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| (Loss) gain on debt conversion | $ |
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$ 13,642,000
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$ (4,057,000)
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| Promissory note principal amount | $ |
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4,348,000
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$ 16,359,000
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| Debt exchange conversion aggregate amount | $ |
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$ 6,615,000
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$ 8,001,000
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| Convertible notes converted into shares of common stock |
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57,029
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| Warrants exercisable expiration period |
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4 months
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| Fair value assumption, risk-free interest rates, minimum |
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0.20%
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| Fair value assumption, risk-free interest rates, maximum |
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0.30%
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| Debt conversion, description |
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Company entered into an additional debt restructuring that resulted in the conversion of debt with an aggregate principal amount of $7,492,000 and accrued interest of $691,000 into common stock of the Company. The carrying value of the debt and related derivative liability at the time of extinguishment amounted to $8,341,000. The aggregate total of $8,183,000 was converted into 4,814,000 shares of common stock at $1.70 per share.
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| Debt conversion, aggregate principal amount | $ |
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$ 7,492,000
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| Debt conversion, accrued interest | $ |
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691,000
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| Debt aggregate conversion amount | $ |
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8,183,000
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| Number of outside directors | Director |
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2
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| Number of former executives | FormerExecutive |
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3
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| Reverse stock split description |
one-for-ten reverse stock split
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one-for-ten reverse split
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| Reverse stock split, conversion ratio |
0.1
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0.1
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| Term of vesting schedule |
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10 years
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| Vested share exercised |
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3 months
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| Stock options granted under equity incentive plans |
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0
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855,000
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0
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| Stock-based compensation expense | $ |
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$ 1,332,000
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| Expected dividend yield |
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0.00%
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| Stock issued during period, shares |
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216,000
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1,851,000
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| Stock issued during period, values | $ |
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$ 3,265,000
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| Warrant unexercised |
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247,000
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| Warrants extend expiration period |
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4 months
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| Warrants, extended expiration date |
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May 06, 2021
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| Future stock-based compensation | $ |
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$ 167,000
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| Immediate Vesting Options [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Expected life |
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2 years 6 months
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| Graded Vested Options [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Expected life |
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3 years 3 months 18 days
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| Minimum [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number of shares granted, vesting period |
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2 years
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| Maximum [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number of shares granted, vesting period |
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3 years
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| 2015 Equity Incentive Plan [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Common stock authorized for issuance there-under |
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1,500,000
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1,500,000
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79,000
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5,000
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| 2015 Plan [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Stock issued during period, shares |
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140,000
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| 2019 Plan [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Stock issued during period, shares |
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721,000
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| Number of shares vested |
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130,000
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| Director |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Common stock issued |
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295,000
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| Number of shares granted, value | $ |
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$ 390,000
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| Stock Option [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Stock-based compensation expense | $ |
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$ 722,000
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| Unregistered Shares [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Stock issued during period, shares |
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300,000
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1,000,000
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| Restricted Stock Award [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Stock-based compensation expense | $ |
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$ 93,000
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| Warrants [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Exercise price of warrants, per share | $ / shares |
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$ 0.50
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| Convertible notes converted into shares of common stock |
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453,000,000
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1,000,000,000
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| Stock-based compensation expense | $ |
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$ 127,000
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| Stock issued during period, shares |
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300,000
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1,000,000
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| Stock issued during period, values | $ |
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$ 227,000
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$ 89,000
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| Debt instrument, term |
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1 year
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| Common Stock [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Fair value assumption, expected volatility |
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70.00%
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| (Loss) gain on debt conversion | $ |
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$ 6,472,000
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| Preferred stock convertible into common stock |
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30,000
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| Convertible notes converted into shares of common stock |
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4,814,000
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| Debt exchange conversion price per unit | $ / shares |
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$ 1.70
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| Debt and related derivative liability at the time of extinguishment | $ |
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$ 8,341,000
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| Conversions of preferred to common stock | $ |
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$ 1,869,000
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| Common stock issued |
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1,068,000
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| Stock repurchased |
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70,000
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| Stock retired |
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70,000
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| Stock repurchased and retired value | $ |
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$ 28,000
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| Reverse stock split description |
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1-for-10
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| Reverse stock split, conversion ratio |
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0.1
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| Stock issued during period, shares, reverse stock splits |
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2,000
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| Expected annualized volatility rate, minimum |
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95.00%
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| Expected annualized volatility rate maximum |
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108.00%
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| Common Stock [Member] | Director |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Common stock issued |
|
|
|
|
|
|
|
|
80,000,000
|
|
|
|
|
|
|
|
|
|
|
|
| Number of shares granted, value | $ |
|
|
|
|
|
|
|
|
$ 106,000
|
|
|
|
|
|
|
|
|
|
|
|
| Common Stock [Member] | Former Executive |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Common stock issued |
|
|
|
|
|
54,000
|
54,000
|
|
54,000
|
|
|
|
|
|
|
|
|
|
|
|
| Number of shares granted, value | $ |
|
|
|
|
|
$ 57,000
|
$ 57,000
|
|
$ 57,000
|
|
|
|
|
|
|
|
|
|
|
|
| Common Stock [Member] | Other Expenses [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Common stock issued |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1,040,000
|
|
|
|
|
| Number of shares granted, value | $ |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 415,000
|
|
|
|
|
| Common Stock [Member] | Simply Mac, Inc. [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Common stock issued |
|
|
|
|
|
|
|
|
|
|
1,040,000
|
|
|
|
|
|
|
|
|
|
| Settlement Agreement with Vendor [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Amount owed by vendor | $ |
|
|
|
$ 164,000
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Issuance of restricted common shares |
|
|
|
9,345
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Warrants exercisable into shares of common stock |
|
|
|
9,345
|
|
|
|
|
|
|
|
|
38,217
|
|
|
|
|
|
|
|
| Exercise price of warrants, per share | $ / shares |
|
|
|
$ 16.40
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Warrants exercisable beginning date |
|
|
|
Jul. 09, 2019
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Warrants exercisable expiration date |
|
|
|
Jan. 09, 2022
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of warrants estimated on the date of issuance | $ |
|
|
|
$ 59,000
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Combined value of the stock and warrants | $ |
|
|
|
173,000
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| (Loss) gain on debt conversion | $ |
|
|
|
(9,000)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Strike price per share | $ / shares |
|
|
|
|
|
|
|
|
|
|
|
|
$ 30.20
|
|
|
|
|
|
|
|
| Aggregate proceeds from exercise of warrants | $ |
|
|
|
|
|
|
|
|
|
|
|
|
$ 1,154,000
|
|
|
|
|
|
|
|
| Settlement Agreement with Vendor [Member] | Restricted Stock Award [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value of restricted stock estimated on the date of issuance | $ |
|
|
|
$ 114,000,000
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value assumption, discount rate |
|
|
|
25.00%
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value assumption, risk-free interest rates |
|
|
|
2.52%
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Expected life |
|
|
|
6 months
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value assumption, expected volatility |
|
|
|
90.00%
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Settlement Agreement with Vendor [Member] | Warrants [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value assumption, risk-free interest rates |
|
|
|
2.54%
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Expected life |
|
|
|
3 years
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Fair value assumption, expected volatility |
|
|
|
90.00%
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Settlement Agreement with Vendor [Member] | Common Stock [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Preferred stock convertible into common stock |
|
|
30,000
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Exchange [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| (Loss) gain on debt conversion | $ |
|
|
|
|
|
|
|
|
|
|
$ 204,000
|
|
|
|
|
|
|
|
|
|
| Promissory note principal amount | $ |
|
|
|
|
|
|
|
|
|
|
434,000
|
$ 7,852,000
|
|
|
|
|
|
|
|
|
| Promissory notes accrued interest | $ |
|
|
|
|
|
|
|
|
|
|
8,000
|
668,000
|
|
|
|
|
|
|
|
|
| Carrying value of extinguishment of debt | $ |
|
|
|
|
|
|
|
|
|
|
|
7,461,000
|
|
|
|
|
|
|
|
|
| Debt exchange conversion aggregate amount | $ |
|
|
|
|
|
|
|
|
|
|
$ 35,000
|
$ 8,520,000
|
|
|
|
|
|
|
|
|
| Warrants exercisable expiration period |
|
|
|
|
|
|
|
|
|
|
|
3 years
|
|
|
|
|
|
|
|
|
| Number of convertible notes exchanged into common stock | ConvertibleNote |
|
|
|
|
|
|
|
|
|
|
2
|
|
|
|
|
|
|
|
|
|
| Shares holders blocker percentage |
|
|
|
|
|
|
|
|
|
|
4.99%
|
|
|
|
|
|
|
|
|
|
| Warrants extend expiration period |
|
|
|
|
|
|
|
|
|
|
|
3 years
|
|
|
|
|
|
|
|
|
| Exchange [Member] | Warrants [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Exercise price of warrants, per share | $ / shares |
|
|
|
|
|
|
|
|
|
|
|
$ 5.10
|
|
|
|
|
|
|
|
|
| Fair value of warrants estimated on the date of issuance | $ |
|
|
|
|
|
|
|
|
|
|
|
$ 3,713,000
|
|
|
|
|
|
|
|
|
| Expected life |
|
|
|
|
|
|
|
|
|
|
|
3 years
|
|
|
|
|
|
|
|
|
| Fair value assumption, expected volatility |
|
|
|
|
|
|
|
|
|
|
|
70.00%
|
|
|
|
|
|
|
|
|
| Combined value of the stock and warrants | $ |
|
|
|
|
|
|
|
|
|
|
|
$ 12,177,000
|
|
|
|
|
|
|
|
|
| (Loss) gain on debt conversion | $ |
|
|
|
|
|
|
|
|
|
|
|
(4,048,000)
|
|
|
|
|
|
|
|
|
| Debt exchange conversion aggregate amount | $ |
|
|
|
|
|
|
|
|
|
|
|
$ 8,464,000
|
|
|
|
|
|
|
|
|
| Each unit comprised of common stock and warrant to purchase number of common share |
|
|
|
|
|
|
|
|
|
|
|
1,540,000
|
|
|
|
|
|
|
|
|
| Fair value assumption, risk-free interest rates, minimum |
|
|
|
|
|
|
|
|
|
|
|
1.50%
|
|
|
|
|
|
|
|
|
| Fair value assumption, risk-free interest rates, maximum |
|
|
|
|
|
|
|
|
|
|
|
1.70%
|
|
|
|
|
|
|
|
|
| Exchange [Member] | Common Stock [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Convertible notes converted into shares of common stock |
|
|
|
|
|
|
|
|
|
|
86,800
|
1,671,000
|
|
|
|
|
|
|
|
|
| Debt exchange conversion price per unit | $ / shares |
|
|
|
|
|
|
|
|
|
|
$ 5.10
|
$ 5.10
|
|
|
|
|
|
|
|
|
| Common stock issued |
|
|
|
|
|
|
|
|
|
|
5,882,000
|
|
|
|
|
|
|
|
|
|
| Shares delivered |
|
|
|
|
|
|
|
|
|
|
270,000
|
|
|
|
|
|
|
|
|
|
| Shares remain to be delivered |
|
|
|
|
|
|
|
|
|
|
5,612,000
|
|
|
|
|
|
|
|
|
|
| Series A Convertible Preferred Stock [Member] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Preferred stock, shares authorized |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
10,000,000
|
|
|
|
|
|
| Preferred stock, shares outstanding |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2,000
|
32,000
|
|
|
|
|
| Percentage of outstanding shares authorized for issuance |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0.00%
|
|
|
|
|
|
| Preferred stock convertible into common stock |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
30,000
|
|
|
|
|
|
| Preferred stock, conversion basis |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
The preferred shares are essentially convertible into common stock of the Company on a one-for-one basis at the election of the holder.
|
|
|
|
|
|