Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2018
Income Tax Contingency [Line Items]
Income tax expense	$ 707	$ 1,372	$ 1,621	$ 2,944
Income tax benefit from discontinued operations	1,300			$ 3,100
Unrecognized tax benefits that would impact effective tax rate	1,300		1,300		$ 1,200
Unrecognized tax benefits, income tax penalties and interest accrued	$ 700		$ 700		$ 700
Minimum
Income Tax Contingency [Line Items]
Number of years open for tax examinations			3 years
Maximum
Income Tax Contingency [Line Items]
Number of years open for tax examinations			5 years