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RELATED-PARTY TRANSACTIONS - Agreement with Oaktree Capital Management (Details) - USD ($) |  |  | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Nov. 07, 2014 | May. 21, 2014 | Jun. 30, 2015 | Dec. 31, 2014 | Jun. 26, 2015
Common Stock |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Issuance of stock shares |  | 5,150,000 |  |  |
Greater Than 5% Shareholder, Oaktree |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Company ownership percentage | 9.90% |  |  |  |
Greater Than 5% Shareholder, Oaktree | The Palisades Group Llc |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Revenue from related parties |  |  | $ 1,900,000 | $ 5,300,000 |
Greater Than 5% Shareholder, Oaktree | Securities Purchase Agreement, Equity Support Payment |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Expenses from transactions with related parties | $ 1,600,000 |  |  |  |
Greater Than 5% Shareholder, Oaktree | Common Stock |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Common stock, shares outstanding |  |  | 3,288,947 |  |
Issuance of stock shares | 3,288,947 |  |  |  |
Price per share issuable | $ 9.78 |  |  |  |
Limited Liability Company Controlled By Affiliate Of Greater Than 5% Shareholder, Oaktree | Loan Purchase Commitments |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Committed revolving repurchase facility |  |  |  |  | $ 35,000,000
Largest aggregate amount of principal outstanding during period |  |  | $ 9,800,000 |  |
Amount outstanding |  |  | 9,800,000 |  |
Proceeds from principal and interest |  |  | $ 0 |  |
Limited Liability Company Controlled By Affiliate Of Greater Than 5% Shareholder, Oaktree | Loan Purchase Commitments | Maximum |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Committed revolving repurchase facility |  |  |  |  | $ 40,000,000

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