Inventories, Net - Schedule of Inventory (Details) - USD ($) $ in Thousands	Dec. 29, 2017	Sep. 30, 2017
Inventory Disclosure [Abstract]
Purchased materials and manufactured parts, net	$ 46,875	$ 49,168
Work in process, net	20,398	17,598
Finished goods, net	136,568	133,237
Inventories, net	$ 203,841	$ 200,003