Annual report pursuant to Section 13 and 15(d)

INCOME TAXES - Narrative (Details)

v3.6.0.2
INCOME TAXES - Narrative (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Operating Loss Carryforwards [Line Items]      
Unrecognized tax benefits $ 23,761 $ 23,104 $ 1,172
Unrecognized tax benefit, interest expense (benefit)   100 $ 100
Unrecognized tax benefit, interest accrued benefit 100 100  
Net deferred tax asset, operating loss carryforwards 217,000    
Net deferred tax asset, operating loss carryforwards, domestic 97,000    
Net deferred tax asset, operating loss carryforwards, state and local 44,000    
Net deferred tax asset, alternative minimum tax carryforward 73,000    
Net deferred tax asset, general business credit carryforward 3,000    
Federal capital loss carryforward valuation allowance 5,003 3,620  
Bad debt reserves with no federal income tax liability 12,000    
Unrecognized deferred tax liability from cumulative bad debt reduction $ 4,000    
Operating Loss Carryforward Federal      
Operating Loss Carryforwards [Line Items]      
Net deferred tax asset carryforward expiration date Dec. 31, 2023    
Operating Loss Carryforward State      
Operating Loss Carryforwards [Line Items]      
Net deferred tax asset carryforward expiration date Dec. 31, 2017    
Federal capital loss carryforward valuation allowance $ 5,000 $ 3,600  
General Business Tax Credit Carryforward      
Operating Loss Carryforwards [Line Items]      
Net deferred tax asset carryforward expiration date Dec. 31, 2030