CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Revenues	$ 15,333	$ 12,827
Cost of revenues (exclusive of depreciation and amortization)	7,280	7,427
Gross profit	8,053	5,400
Operating expenses:
Research and development	3,711	2,023
Sales and marketing	3,392	1,936
General and administrative	6,724	5,377
Impairment charges	1,150	2,317
Depreciation and amortization	3,140	1,321
Total operating expenses	18,117	12,974
Loss from operations	(10,064)	(7,574)
Interest and other (income) expense:
Interest expense and other, net	352	187
Gain on extinguishment of debt	(3,117)	0
Foreign exchange loss	19	0
Interest and other (income) expense, net	(2,746)	187
Loss before income taxes	(7,318)	(7,761)
Income tax expense	103	0
Net loss	(7,421)	(7,761)
Preferred stock dividends	17	27
Undeclared dividends	788	0
Net loss attributable to common stockholders	$ (8,226)	$ (7,788)
Net loss attributable to common stockholders per share:
Basic and diluted net loss per share (in dollars per share)	$ (1.48)	$ (1.52)
Weighted-average number of common shares:
Basic and diluted (in shares)	5,547	5,108