Contingent Consideration (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Business Acquisition, Contingent Consideration [Line Items]
Payments of the liability-classified contingent consideration arrangements	$ 0	$ 0	$ 1,421	$ 318
Other Current Liabilities [Member]
Business Acquisition, Contingent Consideration [Line Items]
Contingent Consideration, Liability	1,297		1,297		$ 2,647
Other non current liabilities [Member]
Business Acquisition, Contingent Consideration [Line Items]
Contingent Consideration, Liability	$ 1,169		$ 1,169		$ 1,085