Fair Value Measurements - Liabilities Measured at Fair Value on a Recurring Basis which Unobservable Inputs are Utilized (Details) - Recurring Measurement Basis - Level 3 - Earnout Consideration $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at December 31, 2019	$ 4,394
Loss included in earnings	171
Acquisitions	(1,000)
Settlements	(1,000)
Balance at March 31, 2020	$ 4,565