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SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS (Details) (Tax Valuation Allowance, USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Tax Valuation Allowance |  |  |  |  |  |
Changes in Valuation and Qualifying Accounts |  |  |  |  |  |
Balance at Beginning of Period | $ 140,982 |  | $ 75,413 |  | $ 150,932 |
Charged (Credited) to Operations | 0 |  | 0 |  | 0 |
Charged to Other Account | 65,482 | [1] | 65,569 | [1] | 177 | [1]
Charges Utilized | 0 |  | 0 |  | (75,696) |
Balance at End of Period | $ 206,464 |  | $ 140,982 |  | $ 75,413 |
[1] | Amounts not charged (credited) to operations are charged (credited) to other comprehensive income or deferred tax assets (liabilities).

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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 SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 Reference 2: 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=6881521&loc=d3e24092-122690 + Details
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