Fair Value - Contingent Consideration (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Business Acquisition, Contingent Consideration [Line Items]
Contingent consideration liability at beginning of period	$ 14,725	$ 15,250
Additions		1,500
Payment of contingent consideration - operating	(1,000)
Payment of contingent consideration - financing		(12,000)
Gain	(2,900)
Contingent consideration liability at end of period	10,825	$ 4,750
Level 3 | Other current liabilities
Business Acquisition, Contingent Consideration [Line Items]
Contingent consideration liability at beginning of period	4,800
Contingent consideration liability at end of period	4,000
Level 3 | Other long-term liabilities
Business Acquisition, Contingent Consideration [Line Items]
Contingent consideration liability at beginning of period	9,900
Contingent consideration liability at end of period	$ 6,800