New Accounting Guidance - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2019	Oct. 01, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Cumulative effect of adoption on retained earnings		$ (135)
Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Cumulative effect of adoption on retained earnings		$ (135)
Minimum | Accounting Standards Update 2016-02
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Operating lease asset obtained in exchange for operating lease liability	$ 16,000
Maximum | Accounting Standards Update 2016-02
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Operating lease asset obtained in exchange for operating lease liability	$ 17,000