Equity Incentive Plan Equity Incentive Plan (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based Compensation Expense	$ 1,178	$ 1,116	$ 3,527	$ 3,343
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based Compensation Expense	119	198	441	635
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based Compensation Expense	832	918	2,491	2,708
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based Compensation Expense	$ 227	$ 0	$ 595	$ 0