Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Income tax provision (benefit)	$ 795	$ (213)	$ 814	$ (1,454)
Income tax expense (benefit) specific to the period			(900)	$ (1,400)
Unrecognized tax benefits that would impact effective tax rate	1,500		1,500
Expected change in unrecognized tax benefits, minimum	200		200
Income tax penalties and interest accrued	300		300		$ 400
Accumulated undistributed foreign earnings	28,800		28,800
Income Tax Contingency [Line Items]
Unrecognized tax benefits	1,539		1,539		$ 2,301
Minimum
Income Tax Contingency [Line Items]
Estimate of unrecognized deferred tax liability	900		900
Maximum
Income Tax Contingency [Line Items]
Estimate of unrecognized deferred tax liability	1,900		1,900
Non-current income taxes payable
Income Tax Contingency [Line Items]
Unrecognized tax benefits	1,100		1,100
Non-current deferred tax assets
Income Tax Contingency [Line Items]
Unrecognized tax benefits	$ 400		$ 400