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SERVICING RIGHTS - Additional Information (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Mar. 30, 2017 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Transfers and Servicing [Abstract] |  |  |  |
Unpaid principal balance |  | $ 3,940,000 | $ 7,580,000 |
Escrow balances |  | 17,800 | 34,200 |
Servicing Assets at Fair Value [Line Items] |  |  |  |
Sales of servicing rights |  | 39,345 | $ 5,382 | $ 5,862
Servicing rights, held-for-sale, fair value |  | $ 29,793 |  |
Discount rate |  | 8.50% |  |
Prepayment speed |  | 8.50% |  |
Discontinued Operations, Disposed of by Sale | Banc Home Loan |  |  |  |
Servicing Assets at Fair Value [Line Items] |  |  |  |
Sales of servicing rights | $ 37,800 | $ 37,772 |  |

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- Definition Continuing Involvement with Derecognized Transferred Financial Assets, Recorded Escrow Balance + References No definition available. + Details
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- Definition Servicing Asset at Amortized Cost, Discount Rate + References No definition available. + Details
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- Definition Servicing Asset at Amortized Cost, Prepayment Speed Calculation, Percentage + References No definition available. + Details
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- Definition Servicing Asset at Fair Value, Amount, Held-For-Sale + References No definition available. + Details
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- Definition Amount of transferred financial assets in which the transferor has continuing involvement with the assets underlying the transaction that have been derecognized. Continuing involvement includes, but is not limited to, servicing, recourse, and restrictions on transferor's interests in transferred financial assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=82924980&loc=d3e107314-111719 + Details
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- Definition Decrease in servicing assets subsequently measured at fair value resulting from conveyance of servicing rights to unrelated parties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=68078379&loc=d3e122625-111746 + Details
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- Details
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- Details
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