CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Revenue	$ 1,185	$ 1,799	$ 4,050	$ 5,766
Cost of revenue (exclusive of depreciation and amortization and casualty loss)	841	1,228	2,800	3,767
Gross profit	344	571	1,250	1,999
Operating expenses:
Research and development	232	693	1,634	1,984
Sales and marketing	282	438	1,161	1,537
General and administrative	1,229	1,628	4,104	5,078
Impairment charges	5,169	254	12,715	302
Casualty loss	0	0	533	0
Depreciation and amortization	592	669	1,818	2,098
Total operating expenses	7,504	3,682	21,965	10,999
Loss from operations	(7,160)	(3,111)	(20,715)	(9,000)
Interest and other expense (income), net	(5)	(2,449)	1	(2,659)
Loss before income taxes	(7,155)	(662)	(20,716)	(6,341)
Income tax expense (benefit)	(3)	0	8	0
Net loss	(7,152)	(662)	(20,724)	(6,341)
Preferred stock dividends	0	0	0	1
Undeclared dividends	0	0	0	366
Induced conversion of Series A-2 Preferred Stock	0	0	0	300
Net loss attributable to common stockholders	$ (7,152)	$ (662)	$ (20,724)	$ (7,008)
Net loss attributable to common stockholders per share:
Basic net loss per share (in dollars per share)	$ (0.23)	$ (0.02)	$ (0.67)	$ (0.28)
Diluted net loss per share (in dollars per share)	$ (0.23)	$ (0.02)	$ (0.67)	$ (0.28)
Weighted-average number of shares of common stock:
Basic (in shares)	30,816	30,739	30,816	25,121
Diluted (in shares)	30,816	30,739	30,816	25,121