Cash Flow Information Cash Flow Information (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Cash required by operating leases		$ 1,971
Cash required by finance leases - interest		120
Cash required by finance leases - principal		1,234
Operating lease additions	[1]	29,206
Finance lease additions		1,326
Transfers from inventory		19,800
Proceeds from Divestiture of Businesses		2,100
Assets Leased to Others [Member]
Payments to Acquire Machinery and Equipment		$ 5,800	$ 6,200

[1] Operating lease additions include lease liabilities recognized at the time of adoption. Refer to Note 2—New Accounting Standards for additional information.