Quarterly report pursuant to Section 13 or 15(d)

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

v3.8.0.1
FAIR VALUES OF ASSETS AND LIABILITIES - Fair Value Option (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Fair Value, Option, Quantitative Disclosures [Line Items]    
Loans Held-for-sale, Fair Value Disclosure $ 584,829 $ 438,224
Loans Receivable, Fair Value Disclosure 99,191 82,319
Fair Value, Measurements, Recurring    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Loans Held-for-sale, Fair Value Disclosure 584,829 438,224
Fair Value, Measurements, Recurring | Mortgages Held For Sale    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Loans Held-for-sale, Fair Value Disclosure 584,829 438,224
Loans Held For Sale Unpaid Principal 564,106 433,760
Difference (20,723) (4,464)
Fair Value, Measurements, Recurring | Mortgages Held To Maturity    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Loans Receivable, Fair Value Disclosure 99,191 82,319
Loans Held To Maturity Unpaid Principal 107,997 91,998
Difference (8,806) (9,679)
Fair Value, Measurements, Recurring | 90 or more days | Mortgages Held For Sale    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Loans Held-for-sale, Fair Value Disclosure 602 0
Loans Held For Sale Unpaid Principal 608 0
Difference (6) 0
Fair Value, Measurements, Recurring | 90 or more days | Mortgages Held To Maturity    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Loans Receivable, Fair Value Disclosure 10,086 8,408
Loans Held To Maturity Unpaid Principal 11,781 11,082
Difference $ (1,695) $ (2,674)