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FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK - MFP Program Recourse Exposure (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Mortgage Partnership Finance Program |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |
MPF program recourse loss recoveries | $ (76) | $ (35) | $ (155) | $ (26)

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- Details
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