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 from operating leases	$ 25,304
Operating cash flows from finance leases	1,023
Financing cash flows from finance leases	1,973
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	29,427
Finance leases	$ 16,998