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Fair Value Measurements (Schedule of Carrying Value and Estimated Fair Value of Financial Instruments) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Fair Value Disclosures [Abstract]          
Fair Value, Liabilities Measured on Recurring Basis    
The reconciliation of the beginning and ending balances for level 3 measurements is as follows (in thousands):

Carrying ValueEstimated Fair Value
Contingent consideration liability, balance as of December 31, 2019$5,267  $5,267  
Payment of contingent consideration—  —  
Payment of contingent consideration in excess of acquisition date fair value(5,267) (5,267) 
Change in fair value of contingent consideration—  —  
Contingent consideration liability, balance as of June 30, 2020$—  $—  
    
Contingent consideration $ 0   $ 0   $ 5,267
Payment for Contingent Consideration Liability, Financing Activities     0 $ (514)  
Payment for Contingent Consideration Liability, Operating Activities     (5,267) (1,332)  
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability 0 $ 197 0 $ (257)  
Debt Instrument, Fair Value Disclosure $ 77,600   $ 77,600