Business Combinations - Schedule of operating results attributable to acquiree (Details) - USD ($) $ in Thousands	2 Months Ended	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2019
Business Acquisition [Line Items]
Acquisition costs		$ 3,294
Fidelity
Business Acquisition [Line Items]
Net interest income	$ 313
Non-interest income	17
Non-interest expense	(331)
Pre-tax income	(1)
Net income	(1)
Acquisition costs			$ 1,500
Acquisition costs by acquiree			227
Washington
Business Acquisition [Line Items]
Net interest income	591
Non-interest income	67
Non-interest expense	(628)
Income tax expense	$ (6)
Acquisition costs			1,800
Acquisition costs by acquiree			$ 312