CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Net Sales	$ 62,197	$ 61,303
Cost of Sales	59,472	58,464
Gross Profit	2,725	2,839
Research and Product Development	7,092	6,886
Selling and Marketing	7,871	9,050
General and Administrative	16,182	20,998
Settlement Expense, net of Reimbursement	0	430
Operating Loss	(28,420)	(34,525)
Other Income (Expense)
Realized Gain (Loss) on Investments	8	30
Warrant Modification Expense	(837)	0
Interest Expense	(1,879)	(25)
Interest Income	238	392
Total Other Income (Expense)	(2,470)	397
Net Loss	$ (30,890)	$ (34,128)
Basic and Diluted Net Loss per Share (in dollars per share)	$ (0.41)	$ (0.56)
Basic and Diluted Weighted Average Shares Outstanding (in shares)	75,621,674	60,918,544