Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash outflows from operating leases	$ 15,335	$ 11,212
Lease liabilities arising from obtaining right-of-use assets:
Operating leases	$ 478	$ 7,769