Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows - operating leases	$ 3,296	$ 3,745
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	$ 1,017	$ 4,218