Consolidated Statements of Financial Condition (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Jun. 30, 2019
ASSETS
Securities held-to-maturity, fair value	$ 399,256	$ 313,613
SHAREHOLDERS' EQUITY
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	12,000,000	12,000,000
Common stock, shares issued (in shares)	8,611,340	8,611,340
Common stock, shares outstanding (in shares)	8,513,414	8,537,814
Treasury stock, shares (in shares)	97,926	73,526