Leases - Supplemental Cash Flow Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows used in operating leases	$ 28,374
Operating cash flows used in finance leases	453
Financing cash flows used in finance leases	6,731
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	27,116
Finance leases	$ 397