CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited Consolidated Condensed) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenue:
Total revenue	$ 7,072	$ 4,039
Cost of revenue	5,042	3,005
Gross profit	2,030	1,034
Operating expense:
Research and development expense	499	372
Selling, general and administrative expense	1,034	705
Income (loss) from operations	497	(43)
Interest expense	139	124
Other income, net	(952)
Income (loss) before provision for income taxes	1,310	(167)
Provisions for income taxes
Net Income (loss)	$ 1,310	$ (167)
Net income (loss) per share - basic (in dollars per share)	$ 0.03	$ (0.00)
Weighted average number of basic shares outstanding (in shares)	38,221,292	38,136,792
Net income (loss) per share - diluted (in dollars per share)	$ 0.03	$ (0.00)
Weighted average number of diluted shares outstanding (in shares)	39,811,292	38,136,792
Product Revenue [Member]
Revenue:
Total revenue	$ 7,050	$ 3,961
Other Revenue [Member]
Revenue:
Total revenue	$ 22	$ 78