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Discontinued Operations (Income Statement and Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Provision (benefit) for income taxes			$ 4,588
Net income (loss) from discontinued operations, net of income taxes	0	0	12,839
Interdata [Member]
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Revenue			27,602
Income (loss) before income taxes			(3,175)
Provision (benefit) for income taxes			(244)
Income from operations of discontinued operations			(2,931)
Gain on sale			5,542
Tax effect of income (loss) from disposal of discontinued operation			623
Net income (loss) from discontinued operations, net of income taxes			2,611
Revenues attributed to intercompany activities			4,249
Alcadon [Member]
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Revenue			24,320
Income (loss) before income taxes			(1,088)
Provision (benefit) for income taxes			643
Income from operations of discontinued operations			(1,731)
Gain on sale			6,182
Tax effect of income (loss) from disposal of discontinued operation			1,341
Net income (loss) from discontinued operations, net of income taxes			4,451
Revenues attributed to intercompany activities			3,931
CES [Member]
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Revenue			6,829
Income (loss) before income taxes			(135)
Provision (benefit) for income taxes			556
Income from operations of discontinued operations			(691)
Gain on sale			6,470
Tax effect of income (loss) from disposal of discontinued operation			1,668
Net income (loss) from discontinued operations, net of income taxes			$ 5,779