Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, Beginning Of Period	$ (14,708)	$ (8,342)	$ (10,197)	$ (11,462)
Income Tax Effect - Benefit/(Expense)	(444)	282	(225)	(575)
Net Of Tax	3,199	(1,875)	(1,345)	889
Realized (Gains) - Investment Securities	(12)	15	(22)	(493)
Income Tax Effect - (Benefit)/Expense	3	(3)	2	(125)
Net Of Tax	(9)	12	(24)	368
Other Comprehensive Income (Loss), After Reclassifications, Net of Tax	3,190	(1,863)	(1,321)	1,257
Balance, End Of Period	(11,518)	(10,205)	(11,518)	(10,205)
Unrealized Gains/Losses On Available-For-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, Beginning Of Period	(696)	1,053		350
Unrealized Gains (Losses)	67	695	(1,407)	937
Income Tax Effect - Benefit/(Expense)	17	(6)	(20)	(99)
Net Of Tax	84	689	(1,387)	1,036
Realized (Gains) - Investment Securities	(12)	15	(22)	(493)
Income Tax Effect - (Benefit)/Expense	3	(3)	2	(125)
Net Of Tax	(9)	12	(24)	368
Other Comprehensive Income (Loss), After Reclassifications, Net of Tax	75	701	(1,363)	1,404
Balance, End Of Period	(621)	1,754	(621)	1,754
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, Beginning Of Period	(14,012)	(9,395)		(11,812)
Unrealized Gains (Losses)	3,576	(2,852)	(163)	(623)
Income Tax Effect - Benefit/(Expense)	(461)	288	(205)	(476)
Net Of Tax	3,115	(2,564)	42	(147)
Net Of Tax			(42)	147
Other Comprehensive Income (Loss), After Reclassifications, Net of Tax	3,115	(2,564)
Balance, End Of Period	$ (10,897)	$ (11,959)	$ (10,897)	$ (11,959)