Share-Based Compensation - Plan Provisions (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2023	Sep. 30, 2022
Share-Based Compensation
Compensation expense	$ 81	$ (42)	$ 81	$ (42)
Income tax benefit	$ 22	$ (11)
2010 Equity Incentive Plan | Vesting period one
Share-Based Compensation
Vesting period	3 years
2019 Equity Incentive Plan
Share-Based Compensation
Shares remaining available for new awards under the 2019 Equity Plan	42,680