Leases - Cash Paid and Lease Recognition (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 50,398
Financing cash flows from finance leases	20,860
Right-of-use lease assets obtained in the exchange for lease liabilities:
Operating leases	19,127
Finance leases	$ 10,731