Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
ROU operating lease liabilities	$ 45,874		$ 46,883
Operating rental payments	3,291	$ 3,079
ROU finance lease assets	17,900		$ 19,200
Services
Lessee, Lease, Description [Line Items]
Impairment of ROU assets	200
Operating Lease Arrangement | Company's Headquarters
Lessee, Lease, Description [Line Items]
ROU operating lease liabilities	4,300	4,500
Operating rental payments	$ 300	$ 200