Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenue	$ 85,177	$ 64,079	$ 165,131	$ 127,890
Cost of revenue	59,086	42,361	111,298	82,379
Gross profit	26,091	21,718	53,833	45,511
Expenses:
Depreciation and amortization	2,479	1,905	4,924	3,806
Research and development	4,109	2,048	7,250	3,995
Loss (gain) on disposal of long-lived assets	214	(15)	412	(15)
Total expenses	27,343	21,562	55,707	44,987
(Loss) income from operations	(1,252)	156	(1,874)	524
Other (expense) income:
Interest expense	(549)	(610)	(1,145)	(1,018)
Other (expense) income, net	237	(47)	391	(53)
Total other expense	(312)	(657)	(754)	(1,071)
Loss before income taxes	(1,564)	(501)	(2,628)	(547)
Income tax benefit	442	390	762	407
Loss from continuing operations	(1,122)	(111)	(1,866)	(140)
Loss from discontinued operations, net of tax	(2,704)	(2,169)	(13,937)	(32,325)
Net loss	$ (3,826)	$ (2,280)	$ (15,803)	$ (32,465)
Basic earnings (loss) per common share:
Continuing operations (in dollars per share)	$ (0.02)	$ 0.00	$ (0.03)	$ 0.00
Discontinued operations, net of tax (in dollars per share)	(0.05)	(0.04)	(0.24)	(0.59)
Basic earnings (loss) per common share (in dollars per share)	(0.07)	(0.04)	(0.27)	(0.59)
Diluted earnings (loss) per common share:
Continuing operations (in dollars per share)	(0.02)	0.00	(0.03)	0.00
Discontinued operations, net of tax (in dollars per share)	(0.05)	(0.04)	(0.24)	(0.59)
Diluted earnings (loss) per common share (in dollars per share)	$ (0.07)	$ (0.04)	$ (0.27)	$ (0.59)
Weighted average common shares:
Weighted average common shares used in computing basic earnings (loss) per common share (in shares)	57,854	54,910	57,764	54,827
Weighted average common shares used in computing diluted earnings (loss) per common share (in shares)	57,854	54,910	57,764	54,827
Corporate
Revenue	$ 0	$ 0	$ 0	$ 0
Gross profit	0	0	0	0
Expenses:
General, selling and administrative	11,155	9,557	23,426	20,096
(Loss) income from operations	(11,767)	(10,114)	(24,643)	(21,148)
Operating Segments
Expenses:
General, selling and administrative	$ 9,386	$ 8,067	$ 19,695	$ 17,105