XML 123 R112.htm IDEA: XBRL DOCUMENT v3.8.0.1
DERIVATIVE INSTRUMENTS - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Jan. 30, 2015
Sep. 30, 2013
Interest Rate Swap Maturing on September 27, 2018 | Cash Flow Hedging              
Derivative [Line Items]              
Derivatives, notional amount             $ 50,000,000
Termination of derivatives         $ 75,000,000    
Interest Rate Swap Maturing on January 30, 2022 | Cash Flow Hedging              
Derivative [Line Items]              
Derivatives, notional amount           $ 25,000,000  
Foreign exchange contracts              
Derivative [Line Items]              
Derivatives asset, fair values $ 0   $ 0   $ 47,000    
Foreign exchange contracts | Other Assets              
Derivative [Line Items]              
Derivatives asset, fair values 0   0        
Net Revenue on Mortgage Banking Activities              
Derivative [Line Items]              
Derivatives gain (loss) (750,000) $ (4,700,000) (12,400,000) $ (16,000,000)      
Other Income | Foreign exchange contracts              
Derivative [Line Items]              
Changes in fair value $ 0   $ 0