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AVAILABLE FOR SALE SECURITIES - INVESTMENT IN HLSS (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Apr. 29, 2015
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Schedule of Available-for-sale Securities [Line Items]          
Sale proceeds from HLSS common stock   $ 7,700      
Purchase amount of available-for-sale securities       $ 29,966 $ 0
Other than temporary impairment loss on HLSS equity securities   0 $ 0 3,285 0
Liquidating dividend         20,400
Gain on sale of and dividends from HLSS equity securities   1,431 0 1,431 0
HLSS          
Schedule of Available-for-sale Securities [Line Items]          
Gain on sale of and dividends from HLSS equity securities   $ 1,431 $ 0 $ (1,900) $ 0
HLSS | Available-for-sale Securities | Common stock          
Schedule of Available-for-sale Securities [Line Items]          
Pre-impairment price per share (in usd per share)   $ 18.58   $ 18.58  
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | HLSS | Common stock          
Schedule of Available-for-sale Securities [Line Items]          
Number of available-for-sale shares acquired (in shares) 1,613,125        
Fair Value, Inputs, Level 1 | Fair Value, Measurements, Recurring | HLSS | Available-for-sale Securities | Common stock          
Schedule of Available-for-sale Securities [Line Items]          
Price per share (in usd per share) $ 4.75 $ 16.54   $ 16.54