Leases (Details) - USD ($)	Jan. 01, 2019	Dec. 31, 2018	Dec. 31, 2017
Adtion of ASC 842 [Abstract]
Finance Lease, Right-of-Use Asset	$ 6,800,000
Finance Lease, Liability	8,800,000
Decrease in Deferred Lease Liability	2,000,000
Derecognition of McCook Financing Lease Liability	6,400,000
Derecognition of McCook Financing Lease Asset	4,500,000
Cumulative Effect of New Accounting Principle in Period of Adoption	1,900,000	$ (329,000)	$ (178,000)
Initial Recognition of Financing Lease Asset and Liability	$ 5,300,000