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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, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Movement in valuation and qualifying accounts |  |  |
Balance at Beginning of Year | $ 32,654 | $ 30,821 | $ 15,766
Charged to Costs and Expenses | 14,838 | 15,382 | 22,510
Deductions | 16,151 | 13,549 | 7,455
Balance at End of Year | 31,341 | 32,654 | 30,821
Valuation allowance on foreign tax credit carryforwards |  |  |
Movement in valuation and qualifying accounts |  |  |
Balance at Beginning of Year | 16,755 | 16,983 | 11,734
Charged to Costs and Expenses |  |  | 5,249
Deductions | 1,359 | 228 |
Balance at End of Year | 15,396 | 16,755 | 16,983
Valuation allowance on foreign net operating losses |  |  |
Movement in valuation and qualifying accounts |  |  |
Balance at Beginning of Year | 560 |  |
Charged to Costs and Expenses | 338 | 560 |
Balance at End of Year | 898 | 560 |
Valuation allowance on state net operating losses |  |  |
Movement in valuation and qualifying accounts |  |  |
Charged to Costs and Expenses | 494 |  |
Balance at End of Year | 494 |  |
Allowance for doubtful accounts |  |  |
Movement in valuation and qualifying accounts |  |  |
Balance at Beginning of Year | 15,339 | 13,838 | 4,032
Charged to Costs and Expenses | 14,006 | 14,822 | 17,261
Deductions | 14,792 | 13,321 | 7,455
Balance at End of Year | $ 14,553 | $ 15,339 | $ 13,838

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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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- 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 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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- Definition Total of the deductions in a given period to 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, representing receivables written off as uncollectible and portions of the reserves utilized, respectively. + 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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