Consolidated Statements of Operations and Comprehensive Income / (Loss) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues	$ 24,909	$ 21,360	$ 37,678
Cost of revenues	14,645	16,474	21,234
Gross profit	10,264	4,886	16,444
Operating Expenses:
General & administrative	6,126	6,095	7,221
Marketing & selling	2,799	3,577	4,658
Research & development	1,130	1,280	1,567
Total Operating Expenses	10,055	10,952	13,446
Operating income (loss)	209	(6,066)	2,998
Other Income (Expense):
Forgiveness of PPP loan	(2,181)		0
Settlements	(3,150)	0	0
Other (expense) income	(61)	(140)	58
Total Other Income (Expense)	(1,030)	(140)	58
Net (loss) income before (benefit from) provision for income taxes	(821)	(6,206)	3,056
(Benefit from) provision for income taxes	(156)	(2,347)	1,514
Net (loss) income	(665)	(3,859)	1,542
Other Comprehensive (Loss) Income:
Foreign currency translation, net of taxes	0	(10)	(225)
Total Comprehensive (Loss) Income	$ (665)	$ (3,869)	$ 1,317
Basic net (loss) income per share (in dollars per share)	$ (0.12)	$ (0.70)	$ 0.28
Diluted net (loss) income per share (in dollars per share)	$ (0.12)	$ (0.70)	$ 0.28
Weighted average common shares outstanding:
Basic (in shares)	5,549	5,524	5,514
Diluted (in shares)	5,549	5,524	5,525