Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues	$ 21,360	$ 37,678	$ 42,674
Cost of revenues	16,474	21,234	22,056
Gross profit	4,886	16,444	20,618
Operating Expenses:
General & administrative	6,095	7,221	6,430
Marketing & selling	3,577	4,658	5,027
Research & development	1,280	1,567	1,551
Total Operating Expenses	10,952	13,446	13,008
Operating (loss) income	(6,066)	2,998	7,610
Other (expense) income	(140)	58	43
Net (loss) income before provision for income taxes	(6,206)	3,056	7,653
(Benefit from) provision for income taxes	(2,347)	1,514	3,069
Net (loss) income	(3,859)	1,542	4,584
Other Comprehensive (Loss) Income:
Foreign currency translation, net of taxes	(10)	(225)	(1,161)
Total Comprehensive (Loss) Income	$ (3,869)	$ 1,317	$ 3,423
Basic net income (loss) per share (in dollars per share)	$ (0.70)	$ 0.28	$ 0.83
Diluted net income (loss) per share (in dollars per share)	(0.70)	0.28	0.83
Dividends declared, per share (in dollars per share)	$ 0.18	$ 0.72	$ 0.69
Weighted average common shares outstanding:
Basic (in shares)	5,524	5,514	5,502
Diluted (in shares)	5,524	5,525	5,547