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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