Employee Benefit Plans - Amortization Schedule (Details) - Death Benefit Plan - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Amortization of Net (Gain) Loss Calculation
Net (gain) loss	$ 17	$ 74
Net (gain) loss subject to amortization	17	74
Corridor (10% of greater of APBO or assets)	83	84
Net (gain)/loss in excess of corridor	$ 0	$ 0
Amortization years	15 years 3 months 18 days	16 years