SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Net Warehouse Interest Income (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Net Warehouse Interest Income
Net warehouse interest income	$ 5,495	$ 7,021
Loans Held for Sale
Net Warehouse Interest Income
Warehouse interest income	7,402	13,984
Warehouse interest expense	(5,910)	(13,955)
Net warehouse interest income	1,492	29
Loans Held for Investment
Net Warehouse Interest Income
Warehouse interest income	6,306	8,779
Warehouse interest expense	(2,303)	(1,787)
Net warehouse interest income	4,003	6,992
Secured Borrowings
Net Warehouse Interest Income
Warehouse interest income	846	888
Warehouse interest expense	$ (846)	$ (888)

Interest and fee income generated by loans the Entity intends and has the ability to hold for the foreseeable future, or until maturity or payoff, including commercial and consumer loans, whether domestic or foreign, which may consist of: (1) industrial and agricultural; (2) real estate; and (3) real estate construction loans; (4) trade financing; (5) lease financing; (6) home equity lines-of-credit; (7) automobile and other vehicle loans; and (8) credit card and other revolving-type loans. Also includes interest income for leases held by the Entity.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.1)
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Interest and fee income from mortgage loans considered to be held-for-sale.

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Amount of the cost of borrowed funds accounted for as interest expense.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The net amount of operating interest income (expense).

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Interest income expense net.

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