Acquisitions Dispositions - Additional Information (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
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	$ 104,567	$ 91,913	$ 92,682	$ 170,081	$ 120,380	$ 91,619	$ 100,497	$ 186,337	$ 459,244	$ 498,834	$ 444,306
Net Income (Loss) Attributable to Parent	$ 8,619	$ 5,119	$ 6,294	$ 21,109	$ 10,097	$ 3,180	$ 5,134	$ 17,681	$ 41,140	36,092	32,787
BravePoint Group [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses, Net of Cash Divested										12,000
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal										6,700
DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTax										4,000
Revenues										15,100	19,100
Net Income (Loss) Attributable to Parent										$ (232)	$ (155)