Leases - Reconciliation of Termination Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2016	Sep. 27, 2015
Reconciliation of the beginning and ending balances of liabilities related to contract termination costs
Balance at the beginning of the period	$ 3,169	$ 6,369
Costs incurred and charged to expense	2,167
Adjustments	(2,232)	(3,200)
Balance at the end of the period	3,104	3,169
WEI
Reconciliation of the beginning and ending balances of liabilities related to contract termination costs
Balance at the beginning of the period	531	900
Cost transfer between groups	637
Costs incurred and charged to expense	1,418
Adjustments	(1,034)	(369)
Balance at the end of the period	1,552	531
RME
Reconciliation of the beginning and ending balances of liabilities related to contract termination costs
Balance at the beginning of the period	2,461	5,046
Cost transfer between groups	(637)
Costs incurred and charged to expense	749
Adjustments	(1,060)	(2,585)
Balance at the end of the period	1,513	2,461
RCM
Reconciliation of the beginning and ending balances of liabilities related to contract termination costs
Balance at the beginning of the period	177	423
Adjustments	(138)	(246)
Balance at the end of the period	$ 39	$ 177