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Income Taxes (Classification of Net Deferred Tax Asset) (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Income Taxes [Abstract] |  |
Current deferred income tax assets |  | $ 1,239
Current deferred income tax liabilities |  | (39)
Long-term deferred income tax assets | $ 10,542 | 1,436
Long-term deferred income tax liabilities | (9,760) | (41,332)
Deferred Tax Assets, Net Of Valuation Allowance | 48,067 | 6,676
Net deferred tax asset | $ 782 |
Net deferred tax (liabilities) |  | $ (38,696)

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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, before jurisdictional netting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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