Discontinued Operations (Income Statement and Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				12 Months Ended							0 Months Ended	12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Interdata [Member]	Dec. 31, 2011 Interdata [Member]	Dec. 31, 2012 Alcadon [Member]	Dec. 31, 2011 Alcadon [Member]	Mar. 29, 2012 CES [Member]	Dec. 31, 2012 CES [Member]	Dec. 31, 2011 CES [Member]	Dec. 31, 2011 Turn Key [Member]	Dec. 31, 2010 Source Photonics [Member]
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Revenue								$ 27,602	$ 38,282	$ 24,320	$ 36,760		$ 6,829	$ 34,643	$ 1,907
Income (loss) before income taxes								(3,175)	3,432	(1,088)	(2,479)		(135)	4,758	(240)
Provision (benefit) for income taxes					0	4,588	5,791	(244)	2,045	643	1,271	400	556	2,454	20
Income from operations of discontinued operations								(2,931)	1,387	(1,731)	(3,750)		(691)	2,304	(260)
Gain on sale								5,542	0	6,182	0		6,470	0	(3,154)
Tax effect of income (loss) from disposal of discontinued operation								623		1,341			1,668		0	0
Net income (loss) from discontinued operations, net of income taxes	9,788	(2,108)	(630)	5,789	0	12,839	(3,474)	2,611	1,387	4,451	(3,750)		5,779	2,304	(3,414)
Revenues attributed to intercompany activities								$ 4,249	$ 6,630	$ 3,931	$ 8,111