Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUES OF ASSETS AND LIABILITIES - Fair Value Option (Details)

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FAIR VALUES OF ASSETS AND LIABILITIES - Fair Value Option (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Fair Value, Option, Quantitative Disclosures [Line Items]    
Loans held for investment $ 98,342 $ 82,319
Loans held for sale    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Loans held for sale, aggregate unpaid principal 408,424 433,760
Difference 14,900 4,464
Loans held for investment    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Loans held for investment 98,342 82,319
Loans held for investment, aggregate unpaid principal 110,234 91,998
Difference (11,892) (9,679)
90 or more days | Loans held for sale    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Loans held for sale, fair value carrying amount 0 0
Loans held for sale, aggregate unpaid principal 0 0
Difference 0 0
90 or more days | Loans held for investment    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Loans held for investment 8,572 8,408
Loans held for investment, aggregate unpaid principal 11,507 11,082
Difference $ (2,935) $ (2,674)