Discontinued Operations - Income Statement and Balance Sheet (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Provision for income taxes									$ 1,311	$ 2,430	$ 1,542
Net income from discontinued operations, net of income taxes	$ (2,185)	$ 738	$ 844	$ 232	$ 364	$ 902	$ 707	$ 410	(371)	2,383	2,536
Current assets:
Total current assets	0				56,415				0	56,415
Current liabilities:
Total current liabilities	0				31,379				0	31,379
Tecnonet
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Product revenue									32,315	47,649	38,095
Service revenue									30,274	37,869	37,541
Revenue									62,589	85,518	75,636
Cost of product									28,472	42,883	35,575
Cost of services									24,181	29,458	29,138
Total cost of revenue									52,653	72,341	64,713
Gross profit									9,936	13,177	10,923
Selling, general and administrative									6,574	7,615	6,297
Operating income									3,362	5,562	4,626
Interest expense									(124)	(305)	(355)
Cumulative translation loss recognized upon sale of Tecnonet									(2,180)	0	0
Other expense, net									(307)	(444)	(193)
Income (loss) before income taxes									751	4,813	4,078
Provision for income taxes									1,311	2,430	1,542
Income (loss) from operations of discontinued operations									(560)	2,383	2,536
Gain on sale of Tecnonet, net of tax									189	0	0
Net income from discontinued operations, net of income taxes									(371)	2,383	$ 2,536
Current assets:
Cash and cash equivalents	0				6,280				0	6,280
Accounts receivable, net	0				25,981				0	25,981
Other receivables	0				10,458				0	10,458
Other receivables	0				9,873				0	9,873
Other current assets	0				3,823				0	3,823
Total current assets	0				56,415				0	56,415
Property and equipment, net	0				358				0	358
Other assets	0				89				0	89
Total assets	0				56,862				0	56,862
Current liabilities:
Short-term debt	0				5,402				0	5,402
Accounts payable	0				17,173				0	17,173
Accrued liabilities	0				3,988				0	3,988
Deferred revenue	0				4,816				0	4,816
Total current liabilities	0				31,379				0	31,379
Other long-term liabilities	0				952				0	952
Total Liabilities	$ 0				32,331				0	32,331
Transaction costs									$ 800
Intercompany obligation					$ 5,000					$ 5,000