Schedule II - Schedule of Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| Allowance for doubtful accounts | |||
| Movement in Valuation Allowances and Reserves [Roll Forward] | |||
| Balance January 1, | $ 8,658 | $ 6,118 | $ 7,815 |
| Charged to Expenses (Benefit) | 55,715 | 55,941 | 47,187 |
| Write-offs/ Payments/ Other | (54,873) | (53,401) | (48,884) |
| Balance December 31, | 9,500 | 8,658 | 6,118 |
| Deferred tax assets—valuation allowance | |||
| Movement in Valuation Allowances and Reserves [Roll Forward] | |||
| Balance January 1, | 47,682 | 49,095 | 4,995 |
| Charged to Expenses (Benefit) | 4,395 | (1,019) | 44,100 |
| Write-offs/ Payments/ Other | 806 | (394) | 0 |
| Balance December 31, | $ 52,883 | $ 47,682 | $ 49,095 |
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- Definition Valuation allowances and reserves charged to cost and expense benefit. 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 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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