v3.7.0.1
Fair Value Measurements Contingent Consideration Payable (Details) - Contingent Consideration [Member] - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period $ 8,634 $ 13,889
Issuance 18,000 0
Payments of contingent consideration (192) (189)
Balance, end of period $ 26,442 $ 13,700