CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Revenue	$ 1,532	$ 1,918
Cost of revenue (exclusive of depreciation and amortization)	1,033	1,290
Gross profit	499	628
Operating expenses:
Research and development	1,004	692
Sales and marketing	562	527
General and administrative	1,690	2,067
Impairment charges	1,138	31
Depreciation and amortization	627	722
Total operating expenses	5,021	4,039
Loss from operations	(4,522)	(3,411)
Interest and other expense, net	6	22
Loss before income taxes	(4,528)	(3,433)
Income tax expense	11	0
Net loss	(4,539)	(3,433)
Preferred stock dividends	0	1
Undeclared dividends	0	366
Induced conversion of Series A-2 Preferred Stock	0	300
Net loss attributable to common stockholders	$ (4,539)	$ (4,100)
Net loss attributable to common stockholders per share:
Basic net loss per share (in dollars per share)	$ (0.15)	$ (0.23)
Diluted net loss per share (in dollars per share)	$ (0.15)	$ (0.23)
Weighted-average number of shares of common stock:
Basic (in shares)	30,816	17,756
Diluted (in shares)	30,816	17,756