SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS (Details) - Allowance for Doubtful Accounts - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| VALUATION AND QUALIFYING ACCOUNTS | |||
| Balance at Beginning of Period | $ 14,600 | $ 13,636 | $ 14,094 |
| Charged to Costs and Expenses | 10,455 | 11,257 | 10,113 |
| Net (Deductions) Recoveries | (10,349) | (10,293) | (10,571) |
| Balance at End of Period | $ 14,706 | $ 14,600 | $ 13,636 |
| X | ||||||||||
- Definition Valuation Allowances and Reserves Deductions Recoveries Net No definition available.
|
| X | ||||||||||
- 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.
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- Definition Amount of increase 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 charges to costs and expenses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|