XML 66 R55.htm IDEA: XBRL DOCUMENT v3.19.1
Securities Held to Maturity - Schedule Of Held To Maturity Securities Pledged (Detail) - Securities Held to Maturity [Member] - USD ($)
$ in Thousands
Mar. 31, 2019
Jun. 30, 2018
Schedule Of Held To Maturity Securities [Line Items]    
Held to maturity securities pledged $ 274,672 $ 283,746
FHLB of New York [Member]    
Schedule Of Held To Maturity Securities [Line Items]    
Held to maturity securities pledged 135,046 142,646
Secure Public Funds On Deposit [Member]    
Schedule Of Held To Maturity Securities [Line Items]    
Held to maturity securities pledged 7,071 7,604
Federal Reserve ("FRB") [Member]    
Schedule Of Held To Maturity Securities [Line Items]    
Held to maturity securities pledged 104,744 107,520
Depositor Sweep Accounts [Member]    
Schedule Of Held To Maturity Securities [Line Items]    
Held to maturity securities pledged $ 27,811 $ 25,976