Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenue	$ 79,458	$ 64,337	$ 244,589	$ 192,227
Cost of revenue	57,718	41,983	169,016	124,362
Gross profit	21,740	22,354	75,573	67,865
Expenses:
Depreciation and amortization	2,540	2,217	7,464	6,024
Research and development	2,691	2,327	9,940	6,323
(Gain) loss on disposal of long-lived assets	(11)	(14)	401	(29)
Total expenses	24,843	24,607	80,550	69,595
Loss from operations	(3,103)	(2,253)	(4,977)	(1,730)
Other (expense) income:
Interest expense	(574)	(518)	(1,718)	(1,536)
Other (expense) income, net	273	(41)	664	(94)
Total other expense	(301)	(559)	(1,054)	(1,630)
Loss before income taxes	(3,404)	(2,812)	(6,031)	(3,360)
Income tax (expense) benefit	(17)	942	746	1,349
Loss from continuing operations	(3,421)	(1,870)	(5,285)	(2,011)
Income (loss) from discontinued operations, net of tax	319	(876)	(13,621)	(33,200)
Net loss	$ (3,102)	$ (2,746)	$ (18,906)	$ (35,211)
Basic earnings (loss) per common share:
Continuing operations (in dollars per share)	$ (0.06)	$ (0.03)	$ (0.09)	$ (0.04)
Discontinued operations, net of tax (in dollars per share)	0.01	(0.02)	(0.24)	(0.60)
Basic earnings (loss) per common share (in dollars per share)	(0.05)	(0.05)	(0.33)	(0.64)
Diluted earnings (loss) per common share:
Continuing operations (in dollars per share)	(0.06)	(0.03)	(0.09)	(0.04)
Discontinued operations, net of tax (in dollars per share)	0.01	(0.02)	(0.24)	(0.60)
Diluted earnings (loss) per common share (in dollars per share)	$ (0.05)	$ (0.05)	$ (0.33)	$ (0.64)
Weighted average common shares:
Weighted average common shares used in computing basic earnings (loss) per common share (in shares)	57,602	56,899	57,709	55,523
Weighted average common shares used in computing diluted earnings (loss) per common share (in shares)	57,602	56,899	57,709	55,523
Corporate
Revenue	$ 0	$ 0	$ 0	$ 0
Gross profit	0	0	0	0
Expenses:
General, selling and administrative	10,346	10,302	33,773	30,398
Loss from operations	(10,955)	(10,882)	(35,598)	(32,031)
Operating Segments
Expenses:
General, selling and administrative	$ 9,277	$ 9,775	$ 28,972	$ 26,879