Condensed Parent Company Only Financial Statements - Balance Sheets (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Cash and cash equivalents	$ 123,592	$ 54,245	$ 35,400	$ 26,326
TOTAL ASSETS	2,700,530	2,542,157
Subordinated debt (Note 8)	15,243	15,142
TOTAL LIABILITIES	2,417,107	2,283,810
Stockholders' equity	283,423	258,347
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	2,700,530	2,542,157
Parent Company
Cash and cash equivalents	1,193	4,576	$ 8,149	$ 8,383
Other Assets	14,380	13,823
Investment in common stock of Bank	283,500	255,601
TOTAL ASSETS	299,073	274,000
Accrued expenses and other liabilities	407	511
Subordinated debt (Note 8)	15,243	15,142
TOTAL LIABILITIES	15,650	15,653
Stockholders' equity	283,423	258,347
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 299,073	$ 274,000