Discontinued Operations - Income Statement and Balance Sheet (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Cost of Revenue:
Provision for income taxes	$ 1,311	$ 2,430
Disposed of by Sale | Tecnonet
Revenue:
Product revenue	32,315	47,649
Service revenue	30,274	37,869
Revenue	62,589	85,518
Cost of Revenue:
Cost of product	28,472	42,883
Cost of services	24,181	29,458
Total cost of revenue	52,653	72,341
Gross profit	9,936	13,177
Selling, general and administrative	6,574	7,615
Operating income	3,362	5,562
Interest expense	(124)	(305)
Cumulative translation loss recognized upon sale of Tecnonet	(2,180)	0
Other expense, net	(307)	(444)
Income (loss) before income taxes	751	4,813
Provision for income taxes	1,311	2,430
Income (loss) from operations of discontinued operations	(560)	2,383
Gain on sale of Tecnonet, net of tax	189	0
Net income from discontinued operations, net of income taxes	(371)	$ 2,383
Transaction costs	$ 800