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Leases (Details) - USD ($) | Jan. 01, 2019 | Dec. 31, 2018 | Dec. 31, 2017
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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 |  |

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- Definition Decrease in Deferred Lease Liability + References No definition available. + Details
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- Definition Derecognition of McCook Financing Lease Asset + References No definition available. + Details
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- Definition Initial Recognition of Financing Lease Asset and Liability + References No definition available. + Details
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- Definition Present value of lessee's discounted obligation for lease payments from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 + Details
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- Definition Amount of lessee's right to use underlying asset under finance lease. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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