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SALES OF SUBSIDIARY AND BUSINESS UNITS - Banc Home Loans Sale Additional Information (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Mar. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
MSRs sold |  | $ 0 |  | $ 0 | $ 39,186 | $ 3
Net gain on disposal |  | 236 |  |  | 13,538 | 0
Caliber |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Unpaid balances of conventional agency mortgage loans | $ 3,860,000 |  |  |  |  |
Banc Home Loan | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Cash premium payment | 25,000 |  |  |  |  |
Book value of certain assets sold | 2,500 | 2,455 |  |  | 2,455 |
MSRs sold | 37,800 |  | $ 37,800 |  | 37,772 |
Net gain on disposal | $ 13,500 | $ 236 |  | $ 0 | $ 13,538 | $ 0
Banc Home Loan | Discontinued Operations, Disposed of by Sale | Buyout Option, Future Earn-Out Receivable |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Earn-out performance period | 38 months |  |  |  |  |
Contingent consideration | $ 35,000 |  |  |  |  |

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