SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands |
12 Months Ended | |||||||
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Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| Allowance for Doubtful Accounts [Member] | ||||||||
| Valuation allowances and reserves [Roll Forward] | ||||||||
| Balance at Beginning of Period | $ 29,634 | $ 17,168 | $ 17,489 | |||||
| Charges of Costs, Expenses and Other | 16,664 | 16,699 | 19,525 | |||||
| Write-off of Accounts Receivable | (14,846) | (3,927) | (18,703) | |||||
| Other | [1] | 1,303 | (306) | (1,143) | ||||
| Balance at End of Period | 32,755 | 29,634 | 17,168 | |||||
| Deferred Tax Asset Valuation Allowance [Member] | ||||||||
| Valuation allowances and reserves [Roll Forward] | ||||||||
| Balance at Beginning of Period | 681,566 | 658,104 | 593,305 | |||||
| Charges of Costs, Expenses and Other | 18,067 | 11,820 | 7,116 | |||||
| Deletions | 0 | 0 | 0 | |||||
| Other | [2] | (103,196) | 11,642 | 57,683 | ||||
| Balance at End of Period | $ 596,437 | $ 681,566 | $ 658,104 | |||||
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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, expenses and other accounts, in a given period. No definition available.
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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, that represent deletions to the reserve. No definition available.
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of increase (decrease) in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from adjustments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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