Annual report pursuant to Section 13 and 15(d)

Acquisitions - Acquisitions Prior to 2013 (Details)

v3.3.1.900
Acquisitions - Acquisitions Prior to 2013 (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Business Acquisition [Line Items]        
Gain (loss) due to changes in contingent cash payments $ (3,268) $ 173   $ 1,284
Acquisitions Prior to 2013        
Business Acquisition [Line Items]        
Deferred cash obligation   1,500 $ 2,100  
Paid contingent cash obligations   $ 200    
Gain (loss) due to changes in contingent cash payments     $ (500)