Leases - Supplemental Cash Flow Information (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from finance leases	$ 184
Operating cash flows from operating leases	16,506
Financing cash flows from finance leases	2,520
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 8,677