Related Party Transactions (Narrative) (Details) - M&T Bank - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018
Related Party Transaction
Related Party US Revolving Credit Facility Interest Percentage	12.00%		12.00%
Credit Extension on Routine Purchases
Related Party Transaction
Related Party Transaction, Amounts of Transaction	$ 6,726	$ 5,759	$ 11,078	$ 11,218
Interest Rate Swaps
Related Party Transaction
Related Party Transaction, Amounts of Transaction			15,000
Lease Agreements
Related Party Transaction
Related Party Transaction, Amounts of Transaction			$ 27,678