Fair Value Measurements (Changes in Fair Value of Level 3 Contingent Consideration Liability (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 29, 2019	Jun. 30, 2018
Business Combination. Contingent Consideration [Roll Forward]
Beginning balance	$ 1,575
Payment of contingent consideration	(1,600)	$ (8,400)
Level 3
Business Combination. Contingent Consideration [Roll Forward]
Beginning balance	1,575	8,400
Addition to contingent consideration		2,100
Payment of contingent consideration		(8,400)
Ending balance		2,100
Kepware | Level 3
Business Combination. Contingent Consideration [Roll Forward]
Beginning balance		8,400
Addition to contingent consideration		0
Payment of contingent consideration		(8,400)
Ending balance		0
Other | Level 3
Business Combination. Contingent Consideration [Roll Forward]
Beginning balance	1,575	0
Addition to contingent consideration		2,100
Payment of contingent consideration	(1,575)	0
Ending balance	$ 0	$ 2,100