v3.20.4

Capital Stock - Additional Information (Detail) |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 14, 2020 shares | Sep. 30, 2019 USD ($) shares | Jan. 09, 2019 USD ($) $ / shares shares | Jan. 31, 2018 $ / shares shares | Aug. 31, 2020 USD ($) shares | Jun. 30, 2020 USD ($) Director FormerExecutive shares | Mar. 31, 2020 USD ($) ConvertibleNote $ / shares shares | Oct. 31, 2019 USD ($) $ / shares shares | Mar. 31, 2019 USD ($) $ / shares shares | Sep. 30, 2019 USD ($) shares | Oct. 31, 2020 USD ($) shares | Sep. 30, 2019 USD ($) | Dec. 31, 2019 USD ($) shares | Feb. 01, 2020 USD ($)
Subsidiary Sale Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants exercisable into shares of common stock | shares |  |  |  | 57,029 |  |  |  |  |  |  |  |  |  |
Exercise price of warrants, per share | $ / shares |  |  |  | $ 91.50 |  |  |  |  |  |  |  |  |  |
Fair value assumption,expected term |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |
(Loss) gain on debt conversion |  |  |  |  |  |  |  |  |  |  | $ 13,642,000 | $ (9,000) |  |
Aggregate proceeds from exercise of warrants |  |  |  |  |  |  |  |  |  |  |  | 1,154,000 |  |
Promissory note principal amount |  | $ 24,200,000 |  |  |  |  | $ 1,800,000 |  |  | $ 24,200,000 | $ 4,848,000 | $ 24,200,000 | $ 16,359,000 | $ 16,359,000
Debt exchange conversion units | shares |  |  |  | 57,029 |  |  |  |  |  |  |  |  |  |
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 | $ 7,800,000 |  |  |  |  |  |
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 | one-for-ten |  |  |  |  |  |  |  |  |  |  |  |  |
Stock split, conversion ratio | 0.1 |  |  |  |  |  |  |  |  |  |  |  |  |
Board of Directors [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsidiary Sale Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock issued | shares |  |  |  |  |  |  |  |  |  |  | 295,000 |  |  |
Common stock issued, value |  |  |  |  |  |  |  |  |  |  | $ 390,000 |  |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsidiary Sale Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value assumption, expected volatility |  |  |  |  |  |  |  |  |  |  | 95.00% |  |  |
(Loss) gain on debt conversion |  |  |  |  |  |  | $ 6,472,000 |  |  |  |  |  |  |
Preferred stock convertible into common stock | shares |  |  |  |  |  |  |  |  |  | 30,000 |  |  |  |
Debt exchange conversion units | shares |  |  |  |  |  |  | 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 |  |  |  |  |  |  |
Conversion of preferred stock to common stock |  |  |  |  |  |  | $ 1,869,000 |  |  |  |  |  |  |
Common stock issued | shares |  |  |  |  |  |  | 1,068,000 |  |  |  |  |  |  |
Stock repurchased | shares |  |  |  |  | 70,000 |  |  |  |  |  |  |  |  |
Stock retired | shares |  |  |  |  | 70,000 |  |  |  |  |  |  |  |  |
Stock repurchased and retired value |  |  |  |  | $ 28,000 |  |  |  |  |  |  |  |  |
Reverse stock split | 1-for-10 |  |  |  |  |  |  |  |  |  |  |  |  |
Stock split, conversion ratio | 0.1 |  |  |  |  |  |  |  |  |  |  |  |  |
Stock issued during period, shares, reverse stock splits | shares | 2,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock [Member] | Board of Directors [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsidiary Sale Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock issued | shares |  |  |  |  |  | 80,000,000 |  |  |  |  |  |  |  |
Common stock issued, value |  |  |  |  |  | $ 106,000 |  |  |  |  |  |  |  |
Common Stock [Member] | Former Executive |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsidiary Sale Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock issued | shares |  |  |  |  |  | 28,000,000 |  |  |  |  |  |  |  |
Common stock issued, value |  |  |  |  |  | $ 27,000 |  |  |  |  |  |  |  |
Common Stock [Member] | Other Expenses [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsidiary Sale Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock issued | shares |  |  |  |  |  |  |  |  |  |  |  |  | 1,040,000 |
Common stock issued, value |  |  |  |  |  |  |  |  |  |  |  |  | $ 415,000 |
Common Stock [Member] | Simply Mac, Inc. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsidiary Sale Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock issued | shares |  |  |  |  |  |  | 1,040,000 |  |  |  |  |  |  |
Settlement Agreement with Vendor [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsidiary Sale Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount owed by vendor |  |  | $ 164,000 |  |  |  |  |  |  |  |  |  |  |
Issuance of restricted common shares | shares |  |  | 9,345 |  |  |  |  |  |  |  |  |  |  |
Warrants exercisable into shares of common stock | shares |  |  | 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] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsidiary Sale Of Stock [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% |  |  |  |  |  |  |  |  |  |  |
Fair value assumption,expected term |  |  | 6 months |  |  |  |  |  |  |  |  |  |  |
Fair value assumption, expected volatility |  |  | 90.00% |  |  |  |  |  |  |  |  |  |  |
Settlement Agreement with Vendor [Member] | Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsidiary Sale Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value assumption, risk-free interest rates |  |  | 2.54% |  |  |  |  |  |  |  |  |  |  |
Fair value assumption,expected term |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |
Fair value assumption, expected volatility |  |  | 90.00% |  |  |  |  |  |  |  |  |  |  |
Settlement Agreement with Vendor [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsidiary Sale Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock convertible into common stock | shares |  | 29,700 |  |  |  |  |  |  |  |  |  |  |  |
Exchange [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsidiary Sale Of Stock [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 |  |  |  |  |  |  |
Exchange [Member] | Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsidiary Sale Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price of warrants, per share | $ / shares |  |  |  |  |  |  |  | $ 5.10 |  |  |  |  |  |
Fair value of warrants estimated on the date of issuance |  |  |  |  |  |  |  | $ 3,713,000 |  |  |  |  |  |
Fair value assumption,expected term |  |  |  |  |  |  |  | 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 | shares |  |  |  |  |  |  |  | 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] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsidiary Sale Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt exchange conversion units | shares |  |  |  |  |  |  | 86,800 | 1,671,000 |  |  |  |  |  |
Debt exchange conversion price per unit | $ / shares |  |  |  |  |  |  | $ 5.10 | $ 5.10 |  |  |  |  |  |

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