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Schedule II - Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Valuation Allowance [Roll Forward] |  |  |
Valuation allowance, beginning balance | $ 94,952 us-gaap_ValuationAllowancesAndReservesBalance | $ 93,576 us-gaap_ValuationAllowancesAndReservesBalance | $ 10,248 us-gaap_ValuationAllowancesAndReservesBalance
Valuation allowance charged to provision for income taxes | 1,505 us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense | 484 us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense | 80,974 us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
Valuation allowance amounts charged to other accounts | (13,907)us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts | 892 us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts | 2,354 us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts
Valuation allowance, ending balance | $ 82,550 us-gaap_ValuationAllowancesAndReservesBalance | $ 94,952 us-gaap_ValuationAllowancesAndReservesBalance | $ 93,576 us-gaap_ValuationAllowancesAndReservesBalance

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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, charged to costs and expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, charged to accounts other than costs and expenses in a given period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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