Leases - Lease Cost and Other Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Leases [Abstract]
Operating lease expense	$ 2,974	$ 3,067	$ 6,037	$ 5,930
Short-term lease expense	676	720	1,369	1,562
Total lease expense	$ 3,650	$ 3,787	7,406	7,492
Cash paid for amounts included in the measurement of operating lease liabilities			6,014	5,671
ROU assets obtained in exchange for operating lease obligations			$ (5,999)	$ 80,543
Weighted-average remaining lease term (years)	9 years 6 months	11 years	9 years 6 months	11 years
Weighted-average discount rate	4.82%	4.96%	4.82%	4.96%