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Basis of Presentation and Significant Accounting Policies Basis of Presentation and Significant Accounting Policies (Details) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Tax benefit | $ (24,682) | $ (26,929)
Increased in diluted weighted average common shares outstanding (in shares) | 950 | 860
New Accounting Pronouncement, Early Adoption, Effect [Member] |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Increased in diluted weighted average common shares outstanding (in shares) | 175 |
New Accounting Pronouncement, Early Adoption, Effect [Member] | Income Tax Expense [Member] |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Tax benefit | $ 2,600 |

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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 + Details
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- Definition The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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