Fair Value - Contingent Consideration (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Business Acquisition, Contingent Consideration [Line Items]
Contingent consideration liability at beginning of period	$ 14,725,000	$ 15,250,000
Additions		1,500,000
Payment of contingent consideration		(12,000,000)
Gain	(2,000,000)
Contingent consideration liability at end of period	12,725,000	$ 4,750,000
Level 3 | Other current liabilities
Business Acquisition, Contingent Consideration [Line Items]
Contingent consideration liability at beginning of period	4,825,000
Contingent consideration liability at end of period	7,675,000
Level 3 | Other long-term liabilities
Business Acquisition, Contingent Consideration [Line Items]
Contingent consideration liability at beginning of period	9,900,000
Contingent consideration liability at end of period	$ 5,050,000