Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVES - Derivatives Recorded at Fair Value (Details)

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DERIVATIVES - Derivatives Recorded at Fair Value (Details) - USD ($)
Sep. 30, 2018
Dec. 31, 2017
Derivative [Line Items]    
Derivative assets $ 27,212,000 $ 2,423,000
Derivative liabilities 2,294,000 697,000
Interest Rate Caps    
Derivative [Line Items]    
Derivative assets 8,000 2,423,000
Interest Rate Lock Commitments    
Derivative [Line Items]    
Derivative assets 8,357,000 0
Forward Loan Sale Commitments    
Derivative [Line Items]    
Derivative assets 305,000 0
TBAs    
Derivative [Line Items]    
Derivative assets 18,542,000 0
Derivative liabilities 0 697,000
Interest Rate Swaps    
Derivative [Line Items]    
Derivative liabilities 2,294,000 0
Variation margin accounts $ (6,800,000) $ 0