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New Accounting Pronouncements New Accounting Pronouncements (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2019 | Jan. 01, 2019 | Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Operating lease right-of-use assets |  | $ 38,190 |  | $ 0
Operating Lease, Liability | [1] | 38,630 |  |
Accounting Standards Update 2018-02 [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Reclassification of stranded tax effects |  | 1,300 |  |
Accounting Standards Update 2016-02 [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Operating lease right-of-use assets |  |  | $ 40,000 |
Operating Lease, Liability |  |  | $ 40,000 |
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets |  | $ 100 |  |
[1] | (a) The maturity table excludes cash flows associated with exited lease facilities. Liabilities for exited lease facilities are included in Accrued liabilities and Other long-term liabilities in the accompanying consolidated balance sheet.

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- Definition Reclassification of stranded tax effects result from the Tax Cuts and Jobs Act of 2017 + References No definition available. + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -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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