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Roll Forward of Unrecognized Tax Benefits and Associated Interest and Penalties Included in Balance Sheet (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions | $ (75,213) |
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities | (1,302) |
Balance | 78,699 | 74,464
Increase in prior year tax positions |  | 4,426
Increase in current year tax positions | 474 | 154
Reductions as a result of a lapse of the applicable statute of limitations |  | (345)
Balance | 2,658 | 78,699
Gross Unrecognized Tax Benefits, Excluding Interest and Penalties |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions | (69,816) |
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities | (525) |
Balance | 72,004 | 69,651
Increase in prior year tax positions |  | 2,544
Increase in current year tax positions | 469 | 154
Reductions as a result of a lapse of the applicable statute of limitations |  | (345)
Balance | 2,132 | 72,004
Interest and Penalties |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |  |
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions | (5,397) |
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities | (777) |
Balance | 6,695 | 4,813
Increase in prior year tax positions |  | 1,882
Increase in current year tax positions | 5 | 0
Reductions as a result of a lapse of the applicable statute of limitations |  | 0
Balance | $ 526 | $ 6,695

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- Definition Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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