CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]
Beginning Balance at Dec. 31, 2018	$ 7,600	$ 6	$ 293	$ 284,751	$ (277,373)	$ (77)
Begining Balance (in shares) at Dec. 31, 2018		569	29,253,278
Stock-based compensation expense	71			71
Net income	612				612
Ending Balance at Mar. 31, 2019	8,283	$ 6	$ 293	284,822	(276,761)	(77)
Ending Balance (in shares) at Mar. 31, 2019		569	29,253,278
Beginning Balance at Dec. 31, 2018	7,600	$ 6	$ 293	284,751	(277,373)	(77)
Begining Balance (in shares) at Dec. 31, 2018		569	29,253,278
Net income	3,322
Ending Balance at Sep. 30, 2019	11,132	$ 6	$ 293	284,961	(274,051)	(77)
Ending Balance (in shares) at Sep. 30, 2019		569,000	29,253,278
Beginning Balance at Mar. 31, 2019	8,283	$ 6	$ 293	284,822	(276,761)	(77)
Begining Balance (in shares) at Mar. 31, 2019		569	29,253,278
Stock-based compensation expense	76			76
Net income	1,494				1,494
Ending Balance at Jun. 30, 2019	9,853	$ 6	$ 293	284,898	(275,267)	(77)
Ending Balance (in shares) at Jun. 30, 2019		569	29,253,278
Stock-based compensation expense	63			63
Net income	1,216				1,216
Ending Balance at Sep. 30, 2019	11,132	$ 6	$ 293	284,961	(274,051)	(77)
Ending Balance (in shares) at Sep. 30, 2019		569,000	29,253,278
Beginning Balance at Dec. 31, 2019	11,847	$ 6	$ 293	285,099	(273,474)	(77)
Begining Balance (in shares) at Dec. 31, 2019		568	29,339,101
Issuance of common stock from stock option awards	(2)		$ 1	(3)
Issuance of common stock from stock options awards, shares			19,805
Stock-based compensation expense	75			75
Net income	38				38
Ending Balance at Mar. 31, 2020	11,958	$ 6	$ 294	285,171	(273,436)	(77)
Ending Balance (in shares) at Mar. 31, 2020		568	29,358,906
Beginning Balance at Dec. 31, 2019	$ 11,847	$ 6	$ 293	285,099	(273,474)	(77)
Begining Balance (in shares) at Dec. 31, 2019		568	29,339,101
Issuance of common stock from stock options awards, shares	249,300
Net income	$ 3,341
Ending Balance at Sep. 30, 2020	15,957	$ 6	$ 298	285,863	(270,133)	(77)
Ending Balance (in shares) at Sep. 30, 2020		568	29,724,037
Beginning Balance at Mar. 31, 2020	11,958	$ 6	$ 294	285,171	(273,436)	(77)
Begining Balance (in shares) at Mar. 31, 2020		568	29,358,906
Issuance of common stock from stock option awards	30		$ 1	29
Issuance of common stock from stock options awards, shares			62,550
Stock-based compensation expense	86			86
Net income	2,039				2,039
Ending Balance at Jun. 30, 2020	14,113	$ 6	$ 295	285,286	(271,397)	(77)
Ending Balance (in shares) at Jun. 30, 2020		568	29,421,456
Issuance of common stock from stock option awards	(87)		$ 1	(88)
Issuance of common stock from stock options awards, shares			97,581,000
Issuance of common stock	570		$ 2	568
Issuance of common stock, shares			205,000
Stock-based compensation expense	97			97
Net income	1,264				1,264
Ending Balance at Sep. 30, 2020	$ 15,957	$ 6	$ 298	$ 285,863	$ (270,133)	$ (77)
Ending Balance (in shares) at Sep. 30, 2020		568	29,724,037