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SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE - Securities Sold Under Agreements to Repurchase (Parenthetical) (Detail)
Jun. 30, 2019
Dec. 31, 2018
short term debt [member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Assets sold under agreements to repurchase interest rate   2.85%
long term debt [member]    
Assets Sold under Agreements to Repurchase [Line Items]    
Assets sold under agreements to repurchase interest rate 2.26% 2.26%