Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Lev3 rec) (Details)

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Fair Value Measurements (Lev3 rec) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2015
Changes in the fair value of Contingent Consideration Liabilities    
Fair value asset transfers between Levels 1, 2 and 3 $ 0  
Recurring Basis    
Changes in the fair value of Contingent Consideration Liabilities    
Balance at the beginning of the period   $ 13,867
Settlement of contingent consideration liability   (7,219)
Fair market value adjustment   (3,791)
Imputed interest   794
Balance at the end of the period $ 6,014 6,014
Castle Rock | Recurring Basis    
Changes in the fair value of Contingent Consideration Liabilities    
Acquisition   $ 2,363