Consolidated Statements of Stockholders' Equity (Deficit) (Unaudited) - USD ($) shares in Thousands	Common Stock Outstanding [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2018	54,286
Balance at Dec. 31, 2018	$ 271,000	$ 21,797,000	$ (17,466,000)	$ 4,602,000
Opening balance adjustment			108,000	108,000
Stock-based compensation, net of issuance costs		92,000		92,000
Restricted share cancellation (in shares)	(55)
Net (loss) income			4,303,000	4,303,000
Balance (in shares) at Mar. 31, 2019	54,231
Balance at Mar. 31, 2019	$ 271,000	21,889,000	(13,055,000)	9,105,000
Balance (in shares) at Dec. 31, 2018	54,286
Balance at Dec. 31, 2018	$ 271,000	21,797,000	(17,466,000)	4,602,000
Net (loss) income				(4,310,000)
Balance (in shares) at Sep. 30, 2019	55,499
Balance at Sep. 30, 2019	$ 278,000	22,011,000	(21,678,000)	611,000
Balance (in shares) at Dec. 31, 2018	54,286
Balance at Dec. 31, 2018	$ 271,000	21,797,000	(17,466,000)	4,602,000
Net (loss) income				(7,700,000)
Balance (in shares) at Dec. 31, 2019	55,539
Balance at Dec. 31, 2019	$ 278,000	22,066,000	(25,020,000)	(2,676,000)
Balance (in shares) at Mar. 31, 2019	54,231
Balance at Mar. 31, 2019	$ 271,000	21,889,000	(13,055,000)	9,105,000
Stock-based compensation, net of issuance costs		77,000		77,000
Restricted share cancellation (in shares)	(25)
Net (loss) income			(3,209,000)	(3,209,000)
Restricted share issuance (in shares)	1,123
Restricted share issuance	$ 6,000	(6,000)
Balance (in shares) at Jun. 30, 2019	55,329
Balance at Jun. 30, 2019	$ 277,000	21,960,000	(16,264,000)	5,973,000
Opening balance adjustment			(10,000)	(10,000)
Stock-based compensation, net of issuance costs		53,000		53,000
Restricted share cancellation (in shares)	(160)
Net (loss) income			(5,404,000)	(5,404,000)
Restricted share issuance (in shares)	330
Restricted share issuance	$ 1,000	(2,000)		(1,000)
Balance (in shares) at Sep. 30, 2019	55,499
Balance at Sep. 30, 2019	$ 278,000	22,011,000	(21,678,000)	611,000
Balance (in shares) at Dec. 31, 2019	55,539
Balance at Dec. 31, 2019	$ 278,000	22,066,000	(25,020,000)	(2,676,000)
Stock-based compensation, net of issuance costs		39,000		39,000
Restricted share cancellation (in shares)	(30)
Net (loss) income			(2,837,000)	(2,837,000)
Balance (in shares) at Mar. 31, 2020	55,509
Balance at Mar. 31, 2020	$ 275,000	22,108,000	(27,857,000)	(5,474,000)
Balance (in shares) at Dec. 31, 2019	55,539
Balance at Dec. 31, 2019	$ 278,000	22,066,000	(25,020,000)	(2,676,000)
Net (loss) income				1,211,000
Balance (in shares) at Sep. 30, 2020	69,985
Balance at Sep. 30, 2020	$ 352,000	26,461,000	(23,809,000)	3,004,000
Balance (in shares) at Mar. 31, 2020	55,509
Balance at Mar. 31, 2020	$ 275,000	22,108,000	(27,857,000)	(5,474,000)
Stock-based compensation, net of issuance costs		322,000		322,000
Restricted share cancellation (in shares)	(682)
Net (loss) income			(4,357,000)	(4,357,000)
Restricted share issuance (in shares)	100
Restricted share issuance	$ (4,000)	4,000
Restricted shares vested	$ 5,000			5,000
Balance (in shares) at Jun. 30, 2020	54,927
Balance at Jun. 30, 2020	$ 275,000	22,435,000	(32,214,000)	(9,504,000)
Stock-based compensation, net of issuance costs		16,000		16,000
Restricted share cancellation (in shares)	(42)
Net (loss) income			8,405,000	8,405,000
Shares issued to Cross River Partners, L.P. in subordinated debt and accrued interest conversion (Note 2) (in shares)	6,054
Shares issued to Cross River Partners, L.P. in subordinated debt and accrued interest conversion (Note 2)	$ 31,000	1,484,000		1,515,000
Shares and warrants issued to East West Bank in senior revolving credit debt restructuring (Note 2 and Note 7) (in shares)	8,000
Shares and warrants issued to East West Bank in senior revolving credit debt restructuring (Note 2 and Note 7)	$ 40,000	2,492,000		2,532,000
Shares issued in at-the-market offering, net of offering costs (Note 2) (in shares)	1,046
Shares issued in at-the-market offering, net of offering costs (Note 2)	$ 6,000	34,000		40,000
Balance (in shares) at Sep. 30, 2020	69,985
Balance at Sep. 30, 2020	$ 352,000	$ 26,461,000	$ (23,809,000)	$ 3,004,000