Leases - Supplemental Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Supplemental Cash Flows Information:
Operating cash flows from operating leases	$ 6,718	$ 6,563
Operating cash flows from finance leases	49	0
Financing cash flows from finance leases	200	0
ROU assets obtained in exchange for lease obligations:
Operating leases	3,784	5,980
Finance leases	$ 440	$ 535
Weighted-average remaining lease term (in years):
Operating leases	5 years		5 years 1 month 6 days
Finance leases	6 years 6 months		6 years 8 months 12 days
Weighted-average discount rate:
Operating leases	3.60%		3.60%
Finance leases	2.80%		2.80%