v3.21.1

Stockholders' Deficit - Additional Information (Detail) |  |  |  |  |  | 1 Months Ended | 2 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 31, 2020 | Oct. 14, 2020 shares | Sep. 30, 2019 shares | Jan. 09, 2019 USD ($) $ / shares shares | Jan. 31, 2018 $ / shares shares | Dec. 31, 2020 USD ($) shares | Sep. 30, 2020 USD ($) shares | Aug. 31, 2020 USD ($) shares | Jun. 30, 2020 USD ($) Director shares | Apr. 30, 2020 USD ($) shares | Mar. 31, 2020 USD ($) ConvertibleNote $ / shares shares | Oct. 31, 2019 USD ($) $ / shares shares | Mar. 31, 2019 USD ($) $ / shares shares | Feb. 29, 2020 shares | Jan. 30, 2021 USD ($) FormerExecutive shares | Dec. 31, 2019 USD ($) $ / shares shares | Feb. 01, 2020 USD ($) shares | Nov. 30, 2019 shares | Dec. 31, 2018 shares | Jun. 30, 2015 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, shares authorized |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,000,000 |  | 10,000,000 |  |  |
Preferred stock, shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,000 |  | 2,000 |  |  |
Common stock, shares authorized |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 150,000,000 |  | 150,000,000 |  |  |
Common stock, shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11,465,000 |  | 4,378,000 |  |  |
Amount owed by vendor | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 400,000 |  |  |  |  |
Warrants exercisable into shares of common stock |  |  |  |  | 57,029 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price of warrants, per share | $ / shares |  |  |  |  | $ 91.50 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants exercisable expiration date |  |  |  |  |  | Jan. 06, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected life |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |
(Loss) gain on debt conversion | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 13,642,000 | $ (4,057,000) |  |  |  |
Promissory note principal amount | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,348,000 |  | $ 16,359,000 |  |  |
Debt exchange conversion aggregate amount | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 6,615,000 | $ 8,001,000 |  |  |  |
Convertible notes converted into shares of common stock |  |  |  |  | 57,029 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants exercisable expiration period |  |  |  |  |  | 4 months |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value assumption, risk-free interest rates, minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.20% |  |  |  |  |
Fair value assumption, risk-free interest rates, maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.30% |  |  |  |  |
Debt conversion, description |  |  |  |  |  |  |  |  |  |  | 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. |  |  |  |  |  |  |  |  |
Debt conversion, aggregate principal amount | $ |  |  |  |  |  |  |  |  |  |  | $ 7,492,000 |  |  |  |  |  |  |  |  |
Debt conversion, accrued interest | $ |  |  |  |  |  |  |  |  |  |  | 691,000 |  |  |  |  |  |  |  |  |
Debt aggregate conversion amount | $ |  |  |  |  |  |  |  |  |  |  | 8,183,000 |  |  |  |  |  |  |  |  |
Number of outside directors | Director |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |  |  |
Number of former executives | FormerExecutive |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 |  |  |  |  |
Reverse stock split description | one-for-ten reverse stock split | one-for-ten reverse split |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reverse stock split, conversion ratio | 0.1 | 0.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term of vesting schedule |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 years |  |  |  |  |
Vested share exercised |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 months |  |  |  |  |
Stock options granted under equity incentive plans |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 855,000 | 0 |  |  |  |
Stock-based compensation expense | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,332,000 |  |  |  |  |
Expected dividend yield |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.00% |  |  |  |  |
Stock issued during period, shares |  |  |  |  |  |  |  |  |  | 216,000 |  |  |  |  |  | 1,851,000 |  |  |  |
Stock issued during period, values | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,265,000 |  |  |  |
Warrant unexercised |  |  |  |  |  | 247,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants extend expiration period |  |  |  |  |  | 4 months |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants, extended expiration date |  |  |  |  |  | May 06, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Future stock-based compensation | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 167,000 |  |  |  |  |
Immediate Vesting Options [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected life |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 years 6 months |  |  |  |  |
Graded Vested Options [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected life |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 years 3 months 18 days |  |  |  |  |
Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares granted, vesting period |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 years |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares granted, vesting period |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 years |  |  |  |  |
2015 Equity Incentive Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock authorized for issuance there-under |  |  |  |  |  | 1,500,000 |  |  |  |  |  |  |  |  |  |  |  | 1,500,000 | 79,000 | 5,000
2015 Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock issued during period, shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 140,000 |  |  |  |
2019 Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock issued during period, shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 721,000 |  |  |  |
Number of shares vested |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 130,000 |  |  |  |
Director |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock issued |  |  |  |  |  |  |  |  | 295,000 |  |  |  |  |  |  |  |  |  |  |
Number of shares granted, value | $ |  |  |  |  |  |  |  |  | $ 390,000 |  |  |  |  |  |  |  |  |  |  |
Stock Option [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation expense | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 722,000 |  |  |  |  |
Unregistered Shares [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock issued during period, shares |  |  |  |  |  |  |  |  |  | 300,000 |  |  |  |  |  | 1,000,000 |  |  |  |
Restricted Stock Award [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation expense | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 93,000 |  |  |  |  |
Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price of warrants, per share | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.50 |  |  |  |
Convertible notes converted into shares of common stock |  |  |  |  |  | 453,000,000 |  |  |  |  |  |  |  |  |  | 1,000,000,000 |  |  |  |
Stock-based compensation expense | $ |  |  |  |  |  |  |  |  |  | $ 127,000 |  |  |  |  |  |  |  |  |  |
Stock issued during period, shares |  |  |  |  |  |  |  |  |  | 300,000 |  |  |  |  |  | 1,000,000 |  |  |  |
Stock issued during period, values | $ |  |  |  |  |  | $ 227,000 |  |  |  | $ 89,000 |  |  |  |  |  |  |  |  |  |
Debt instrument, term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 year |  |  |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value assumption, expected volatility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 70.00% |  |  |  |
(Loss) gain on debt conversion | $ |  |  |  |  |  |  |  |  |  |  | $ 6,472,000 |  |  |  |  |  |  |  |  |
Preferred stock convertible into common stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 30,000 |  |  |  |
Convertible notes converted into shares of common stock |  |  |  |  |  |  |  |  |  |  | 4,814,000 |  |  |  |  |  |  |  |  |
Debt exchange conversion price per unit | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 1.70 |  |  |  |  |  |  |  |  |
Debt and related derivative liability at the time of extinguishment | $ |  |  |  |  |  |  |  |  |  |  | $ 8,341,000 |  |  |  |  |  |  |  |  |
Conversions of preferred to common stock | $ |  |  |  |  |  |  |  |  |  |  | $ 1,869,000 |  |  |  |  |  |  |  |  |
Common stock issued |  |  |  |  |  |  |  |  |  |  | 1,068,000 |  |  |  |  |  |  |  |  |
Stock repurchased |  |  |  |  |  |  |  | 70,000 |  |  |  |  |  |  |  |  |  |  |  |
Stock retired |  |  |  |  |  |  |  | 70,000 |  |  |  |  |  |  |  |  |  |  |  |
Stock repurchased and retired value | $ |  |  |  |  |  |  |  | $ 28,000 |  |  |  |  |  |  |  |  |  |  |  |
Reverse stock split description |  | 1-for-10 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reverse stock split, conversion ratio |  | 0.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock issued during period, shares, reverse stock splits |  | 2,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected annualized volatility rate, minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 95.00% |  |  |  |  |
Expected annualized volatility rate maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 108.00% |  |  |  |  |
Common Stock [Member] | Director |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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. |  |  |  |  |

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