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CHAPTER 11 FILING AND EMERGENCE FROM BANKRUPTCY (Narrative) (Details) - USD ($) $ in Thousands						1 Months Ended		3 Months Ended								12 Months Ended
	Aug. 05, 2016	Apr. 05, 2016	Mar. 17, 2016	Aug. 05, 2015	Aug. 05, 2014	Feb. 28, 2017	May 31, 2016	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Debtor reorganization items, gain (loss) on settlement of other claims, net															$ 20,359	$ 0	$ 20,359	$ 0
Litigation recovery percentage	15.00%	15.00%
Debtor reorganization items settlement due to plantiffs																0	2,136	0
Reorganization items, net								$ (8)	$ (46)	$ 9	$ 235	$ 393	$ 5,732	$ 860	$ (17,910)	190	(10,925)	8,052
Proskauer Action [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Debtor reorganization items, gain (loss) on settlement of other claims, net	$ 2,136	$ 2,136	$ 5,000	$ 3,000	$ 7,000
Net litigation recovery, amount																	14,242
Litigation recovery percentage	15.00%														15.00%
Sec Investigation [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Debtor reorganization items, gain (loss) on settlement of other claims, net						$ 5,000
Excluded Litigation Case Proskauer [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Reorganization items, net																295	2,455	18,068
Common Class B [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Payments of dividends										$ 1,337
Class B Warrant [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Debtor reorganization items settlement due to plantiffs																$ 0	$ 86	$ 0
Class B Warrant [Member] \| Proskauer Action [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Debtor reorganization items settlement due to plantiffs														$ 86
Class B Warrant [Member] \| Common Class B [Member] \| Proskauer Action [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Litigation recovery percentage							10.00%
Nondebtor reorganization items, net (gain) loss on settlement of other claims							$ 1,423