Parent Company Financial Information - Condensed Balance Sheet (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Assets
Cash and equivalents	$ 45,222	$ 41,982
Other securities	37,214	39,355
Allowance for loan losses	(21,060)	(21,151)
Other assets	8,220	7,560
Total Assets	3,304,169	3,206,533
Liabilities and Stockholders’ Equity
Other liabilities	61,760	61,998
Stockholders’ Equity	409,242	397,647
Total Liabilities and Stockholders’ Equity	3,304,169	3,206,533
Parent Company
Assets
Cash and equivalents	23,042	11,078
Certificates of deposit in other banks	994	7,211
Other securities	63	63
Total loans	3,840	5,345
Allowance for loan losses	(64)	(186)
Net loans	3,776	5,159
REO	805	1,462
Investment in bank subsidiary	372,206	363,603
ESOP loan receivable	7,896	8,368
Other assets	499	790
Total Assets	409,281	397,734
Liabilities and Stockholders’ Equity
Other liabilities	39	87
Stockholders’ Equity	409,242	397,647
Total Liabilities and Stockholders’ Equity	$ 409,281	$ 397,734