UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Net Sales	$ 15,473	$ 15,857
Cost of Sales	15,072	14,744
Gross Profit	401	1,113
Research and Product Development	1,809	1,822
Selling and Marketing	1,851	2,073
General and Administrative	3,923	5,273
Operating Loss	(7,182)	(8,055)
Other (Expense) Income
Realized Gain on Investments	0	2
Interest Expense	(581)	(102)
Interest Income	11	171
Total Other (Expense) Income	(570)	71
Net Loss	$ (7,752)	$ (7,984)
Basic Net Loss per Share (in dollars per share)	$ (0.08)	$ (0.12)
Diluted Net Loss per Share (in dollars per share)	$ (0.08)	$ (0.12)
Basic Weighted Average Shares Outstanding (in shares)	93,591,053	67,518,240
Diluted Weighted Average Shares Outstanding (in shares)	93,591,053	67,518,240