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SALE OF BUSINESS UNIT (DISCONTINUED OPERATIONS) - Summary of net gain on disposal of discontinued operations (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended | 12 Months Ended | 15 Months Ended
--- | --- | --- | --- | --- | ---
Mar. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Mar. 31, 2018 | Jun. 30, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Net cash proceeds |  |  |  | $ 0 | $ 55,865 |  |
Book value of MSRs sold |  | $ (2,570) | $ 0 | (28,549) | (39,186) |  |
Net gain on disposal |  | 272 | 236 | 1,275 | 13,538 |  |
Banc Home Loan | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |
Proceeds from the transaction |  | 0 | (264) | 0 | 63,068 |  | $ 63,054
Compensation expense related to the transaction |  | 0 | 500 | 1,003 | (3,500) |  | (2,497)
Other transaction costs |  | 272 | 0 | 272 | (3,703) |  | (3,159)
Net cash proceeds |  | 272 | 236 | 1,275 | 55,865 |  | 57,398
Book value of certain assets sold | $ (2,500) | 0 | (2,455) | 0 | (2,455) |  | 0
Book value of MSRs sold | $ (37,800) | 0 | 0 | 0 | (37,772) |  | (37,772)
Goodwill |  | 0 | (2,100) | 0 | (2,100) |  | 0
Net gain on disposal |  | $ 272 | $ 236 | $ 1,275 | $ 13,538 | $ 15,100 | $ 15,071

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- Definition Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109222650&loc=d3e1361-107760 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109222160&loc=d3e957-107759 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3B -URI http://asc.fasb.org/extlink&oid=109222160&loc=SL51721525-107759 + Details
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