Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 6,994	$ 4,445
Operating cash flows from finance leases	5	0
Financing cash flows from finance leases	25	0
Right of use assets obtained in exchange for lease liabilities
Operating leases	214	47,773
Finance leases	$ 0	$ 0