Leases - Leasing Activities (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019 USD ($)
Leases [Abstract]
Operating Cash Flows for Finance Leases	$ 345
Operating Cash Flows for Operating Leases	91,333
Financing Cash Flows for Finance Leases	1,971
Total Cash Paid for Amounts Included in Measurement of Lease Liabilities	93,649
Right-of-Use Assets Obtained in Exchange for New Finance Lease Liabilities	0
Right-of-Use Assets Obtained in Exchange for New Operating Lease Liabilities, Net of Exercised Early Lease Termination Options	$ 27,185