Consolidated Statements Of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 01, 2017	Apr. 02, 2016	Apr. 01, 2017	Apr. 02, 2016
Income Statement [Abstract]
Net sales	$ 604,349	$ 618,660	$ 1,239,368	$ 1,235,324
Cost of sales	540,549	565,388	1,111,212	1,131,993
Gross profit	63,800	53,272	128,156	103,331
Selling and administrative expenses	31,229	28,009	61,682	55,037
Restructuring and other charges	0	1,917	0	3,424
Operating income	32,571	23,346	66,474	44,870
Other income (expense):
Interest expense	3,262	3,674	6,536	7,208
Interest Income	(1,185)	(1,015)	(2,256)	(1,947)
Miscellaneous	1,925	(1,128)	1,251	(2,748)
Income before income taxes	32,419	19,559	63,445	36,861
Income tax expense	3,124	2,772	5,971	5,626
Net income	$ 29,295	$ 16,787	$ 57,474	$ 31,235
Earnings per share:
Basic	$ 0.87	$ 0.50	$ 1.71	$ 0.94
Diluted	$ 0.84	$ 0.50	$ 1.66	$ 0.92
Weighted average shares outstanding:
Basic	33,703	33,319	33,619	33,368
Diluted	34,702	33,834	34,631	33,957
Comprehensive income:
Net income	$ 29,295	$ 16,787	$ 57,474	$ 31,235
Derivative instrument fair value adjustments	3,159	8,043	(2,244)	13,787
Foreign currency translation adjustments	2,613	1,022	(8,746)	(5,584)
Other comprehensive income (loss)	5,772	9,065	(10,990)	8,203
Total comprehensive income	$ 35,067	$ 25,852	$ 46,484	$ 39,438