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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Summary of Fair Value of Derivative Instruments and Location in Statement of Financial Condition (Detail) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Derivatives Fair Value [Line Items] |  |
Derivatives, included in assets | $ 312 | $ 554
Derivatives, included in liabilities | 324 | 753
Other Assets [Member] | Interest Rate Cap [Member] | Purchase |  |
Derivatives Fair Value [Line Items] |  |
Derivatives, included in assets | 305 | 554
Other Assets [Member] | Interest Rate Cap [Member] | Written |  |
Derivatives Fair Value [Line Items] |  |
Derivatives, included in assets | 0 | 0
Other Assets [Member] | Forward Contracts [Member] |  |
Derivatives Fair Value [Line Items] |  |
Derivatives, included in assets | 7 | 0
Other Liabilities [Member] | Interest Rate Cap [Member] | Purchase |  |
Derivatives Fair Value [Line Items] |  |
Derivatives, included in liabilities | 0 | 0
Other Liabilities [Member] | Interest Rate Cap [Member] | Written |  |
Derivatives Fair Value [Line Items] |  |
Derivatives, included in liabilities | 305 | 552
Other Liabilities [Member] | Forward Contracts [Member] |  |
Derivatives Fair Value [Line Items] |  |
Derivatives, included in liabilities | $ 19 | $ 201

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