INCOME TAXES (Operating Loss Carryforwards, Federal, Expiration Years) (Details) (Federal - Domestic Tax Authority [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 529,278	$ 571,800
Expiration Year 2021 [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	2,177
Expiration Year 2022 [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	2,386
Expiration Years 2023 - 2026 [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	14,937
Expiration Years 2027 - 2032 [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 509,778