INCOME TAXES INCOME TAXES (VALUATION ALLOWANCES) (Details) - Valuation Allowance of Deferred Tax Assets [Member] - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2017 |
Mar. 31, 2016 |
|
| Valuation and Qualifying Accounts Disclosure [Line Items] | ||
| Valuation Allowance, Beginning of Period | $ 326,097 | $ 300,601 |
| Valuation Allowance, Additions | 4,425 | 8,004 |
| Valuation Allowance, End of Period | $ 330,522 | $ 308,605 |