CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	Services	Cash	Common Stock	Common Stock Services	Common Stock Cash	Treasury Stock	Accumulated Income (Deficit)	Accumulated Other Comprehensive Income (Loss)
Beginning Balance at Sep. 27, 2008	$ 125,396			$ 325,516			$ (46,118)	$ (156,211)	$ 2,209
Beginning Balance (in shares) at Sep. 27, 2008				53,648
Employer contribution to the Company's 401(k) plan (in shares)				357
Employer contribution to the Company's 401(k) plan	811			811
Exercise of stock options (in shares)				156
Exercise of stock options	461			461
Purchase of treasury stock (in shares)				(44)
Purchase of treasury stock	(238)						(238)
Equity-based compensation expense	847			847
Shares issued for purchase of Orthodyne (in shares)				7,117
Shares issued for purchase of Orthodyne	46,221			46,221
Impact of Debt, Debt With Conversion Options adoption (Note 5)	(5,587)							(5,587)
Components of comprehensive income (loss):
Net income (loss)	(36,014)							(36,014)
Translation adjustment	(151)								(151)
Unrealized gain on investments, net	16								16
Switzerland pension plan curtailment	193								193
Unamortized pension costs	(388)								(388)
Total comprehensive income (loss)	(36,344)
Issuance of stock (in shares)					181	8,000
Issuance of stock		540	38,696		540	38,696
Ending Balance at Oct. 03, 2009	170,803			413,092			(46,356)	(197,812)	1,879
Ending Balance (in shares) at Oct. 03, 2009				69,415
Employer contribution to the Company's 401(k) plan (in shares)				212
Employer contribution to the Company's 401(k) plan	1,384			1,384
Exercise of stock options (in shares)				502
Exercise of stock options	2,872			2,872
Issuance of shares for time-based restricted stock				232
Equity-based compensation expense	5,676			5,676
Costs related to prior year sale of common stock	(29)			(29)
Components of comprehensive income (loss):
Net income (loss)	142,142							142,142
Translation adjustment	1,021								1,021
Unamortized pension costs	(2,109)								(2,109)
Total comprehensive income (loss)	141,054
Issuance of stock (in shares)					114
Issuance of stock		720			720
Ending Balance at Oct. 02, 2010	322,480			423,715			(46,356)	(55,670)	791
Ending Balance (in shares) at Oct. 02, 2010				70,475
Employer contribution to the Company's 401(k) plan (in shares)				42
Employer contribution to the Company's 401(k) plan	279			279
Exercise of stock options (in shares)				1,245
Exercise of stock options	9,296			9,296
Issuance of shares for time-based restricted stock				927
Net operating losses attributable to exercises of stock options	2,099			2,099
Equity-based compensation expense	5,640			5,640
Components of comprehensive income (loss):
Net income (loss)	127,610							127,610
Translation adjustment	1,022								1,022
Unamortized pension costs	731								731
Total comprehensive income (loss)	129,363
Issuance of stock (in shares)					90
Issuance of stock		720			720
Ending Balance at Oct. 01, 2011	$ 469,877			$ 441,749			$ (46,356)	$ 71,940	$ 2,544
Ending Balance (in shares) at Oct. 01, 2011				72,779