CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Revenue	$ 3,474	$ 4,080
Operating expenses:
Cost of revenue (exclusive of depreciation and amortization)	2,147	2,448
Research and development	250	287
Sales and marketing	177	140
General and administrative	898	1,016
Impairment charges	650	0
Depreciation and amortization	232	459
Total operating expenses	4,354	4,350
Loss from operations	(880)	(270)
Interest and other expense, net	(405)	(371)
Loss before income taxes	(1,285)	(641)
Income tax expense	0	(27)
Net loss	(1,285)	(668)
Preferred stock dividends	3	3
Net loss attributable to common stockholders	$ (1,288)	$ (671)
Net loss attributable to common stockholders per share:
Basic and diluted net loss per share (in dollars per share)	$ (0.03)	$ (0.02)
Weighted-average number of shares of common stock:
Basic and diluted (in shares)	46,232	36,181