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Derivative Instruments and Hedging Activities - Offsetting Derivatives (Detail) - USD ($)
$ in Thousands
Sep. 30, 2019
Jun. 30, 2019
Derivative [Line Items]    
Gross Amount Recognized, Assets $ 4,134 $ 5,334
Gross Amounts Offset, Assets (1,704) (1,478)
Net Amounts Presented, Assets 2,430 3,856
Net Amount, Assets 2,430 3,856
Gross Amount Recognized, Liabilities 2,073 1,618
Gross Amounts Offset, Liabilities (1,704) (1,478)
Net Amounts Presented, Liabilities 369 140
Gross Amounts Not Offset, Cash Collateral Posted, Liabilities (150)  
Net Amount, Liabilities 219 140
Interest Rate Swaps [Member]    
Derivative [Line Items]    
Gross Amount Recognized, Assets 2,716 5,334
Gross Amounts Offset, Assets (1,704) (1,478)
Net Amounts Presented, Assets 1,012 3,856
Net Amount, Assets 1,012 3,856
Gross Amount Recognized, Liabilities 2,073 1,618
Gross Amounts Offset, Liabilities (1,704) (1,478)
Net Amounts Presented, Liabilities 369 140
Gross Amounts Not Offset, Cash Collateral Posted, Liabilities (150)  
Net Amount, Liabilities 219 $ 140
Interest Rate Caps [Member]    
Derivative [Line Items]    
Gross Amount Recognized, Assets 1,418  
Net Amounts Presented, Assets 1,418  
Net Amount, Assets $ 1,418