Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Changes in Level 3 Fair Values (Details)

v3.19.1
Fair Value Measurements - Changes in Level 3 Fair Values (Details) - Level 3 - Contingent Consideration - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance at beginning of period $ 6,000 $ 414
Settlements through cash payments 0 (247)
Net gain on change in fair value 0 (63)
Balance at end of period $ 6,000 $ 104