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	$ 16,915	$ 11,758
Non-cash operating activities:
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 1,034	$ 153,048