CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Revenue	$ 14,686	$ 12,922	$ 41,312	$ 44,967
Cost of revenue	11,503	9,603	32,512	33,971
Gross profit	3,183	3,319	8,800	10,996
Operating expenses:
Selling, general and administrative	3,265	2,878	10,521	12,548
Research and development	149	137	460	526
Restructuring charges	(10)	185	798	195
Loss on impairment	3	0	3	4,302
Depreciation	69	76	216	254
Amortization of intangible assets	286	414	929	1,528
Total operating expenses	3,762	3,690	12,927	19,353
Operating loss	(579)	(371)	(4,127)	(8,357)
Interest expense, net	(32)	(128)	(135)	(556)
Gain on derivative instruments, net	0	31	0	35
Other income, net	12,215	(77)	16,853	(24)
Income (loss) before income taxes	11,604	(545)	12,591	(8,902)
Provision for income taxes	166	116	127	166
Net income (loss)	$ 11,438	$ (661)	$ 12,464	$ (9,068)
Net income (loss) per common share - basic (in dollars per share)	$ 0.55	$ (0.03)	$ 0.60	$ (0.44)
Net income (loss) per common share - diluted (in dollars per share)	$ 0.55	$ (0.03)	$ 0.60	$ (0.44)
Weighted average shares outstanding used to compute net income (loss) per share - basic (in shares)	20,863,479	20,563,452	20,714,068	20,438,571
Weighted average shares outstanding used to compute net income (loss) per share - diluted (in shares)	20,863,479	20,563,452	20,714,068	20,438,571