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RESERVE FOR LOSS ON REPURCHASED LOANS - Summary of Activities in Reserve for Loss Reimbursements on Sold Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Loss Contingency Accrual [Roll Forward]
Subsequent change in the reserve	$ (2,488)	$ (1,812)	$ (3,352)
Representations and Warranties Obligations and Corporate Guarantees
Loss Contingency Accrual [Roll Forward]
Balance at beginning of year	6,306	7,974	9,700
Initial provision for loan repurchases	126	1,622	3,942
Utilization of reserve for loan repurchases	(1,438)	(2,238)	(2,316)
Other adjustments	0	760	0
Balance at end of year	$ 2,506	$ 6,306	$ 7,974

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- Definition

Loss Contingency Accrual, Other Adjustments

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- Definition

Loss Contingency Accrual, Subsequent Change in the Reserve

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- Definition

Amount of loss contingency liability.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
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- Definition

Amount of cash outflow reducing loss contingency liability.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
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- Definition

Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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