Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands		12 Months Ended
		Sep. 25, 2015	Sep. 26, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, Beginning Of Period		$ 3,014	$ 7,814
Income Tax Effect - Benefit/(Expense)		777	(332)
Net of tax		(14,118)	(4,587)
Realized (Gains) - Investment Securities	[1]	(446)	(368)
Income Tax Effect - Expense	[2]	88	155
Net Of Tax		(358)	(213)
Net current-period other comprehensive income/(loss)		(14,476)	(4,800)
Balance, End Of Period		(11,462)	3,014
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, Beginning Of Period		505	203
Other Comprehensive Income (Loss), before Reclassifications, before Tax		290	801
Income Tax Effect - Benefit/(Expense)		(87)	(286)
Net of tax		203	515
Realized (Gains) - Investment Securities	[1]	(446)	(368)
Income Tax Effect - Expense	[2]	88	155
Net Of Tax		(358)	(213)
Net current-period other comprehensive income/(loss)		(155)	302
Balance, End Of Period		350	505
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, Beginning Of Period		2,509	7,611
Other Comprehensive Income (Loss), before Reclassifications, before Tax	[1]	(15,185)	(5,056)
Income Tax Effect - Benefit/(Expense)		864	(46)
Net of tax		(14,321)	(5,102)
Net current-period other comprehensive income/(loss)		(14,321)	(5,102)
Balance, End Of Period		$ (11,812)	$ 2,509

[1] Realized gains or losses from the sale of our available-for-sale investment securities or from foreign currency translation adjustments are included within other income/expense, net in our consolidated statements of operations

[2] The income tax benefit or expense is included within provision for income taxes in our consolidated statements of operations.