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EQUITY METHOD INVESTMENTS - (Details 2) - USD ($)
$ in Thousands
2 Months Ended 4 Months Ended 6 Months Ended
Jun. 30, 2014
Apr. 30, 2014
Jun. 30, 2015
Natural Resources | Successor Company      
Schedule of Equity Method Investments [Line Items]      
Revenues $ 1,857   $ 104,163
Expenses 910   165,945
Net income (loss) 947   (42,614)
Natural Resources | Predecessor Company      
Schedule of Equity Method Investments [Line Items]      
Revenues   $ 2,579  
Expenses   1,763  
Net income (loss)   815  
Commercial Real Estate | Successor Company      
Schedule of Equity Method Investments [Line Items]      
Revenues 14,449   59,433
Expenses 15,797   69,659
Net income (loss) (1,348)   (10,226)
Commercial Real Estate | Predecessor Company      
Schedule of Equity Method Investments [Line Items]      
Revenues   29,356  
Expenses   35,860  
Net income (loss)   (6,504)  
Other | Successor Company      
Schedule of Equity Method Investments [Line Items]      
Revenues 3,001   32,364
Expenses 21   11,664
Net income (loss) $ 8,519   $ 16,327
Other | Predecessor Company      
Schedule of Equity Method Investments [Line Items]      
Revenues   1,833  
Expenses   7  
Net income (loss)   $ 13,672