Legal Matters	6 Months Ended
Mar. 31, 2012
Legal Matters [Abstract]
Legal Matters	11. Legal Matters As previously reported by the Company, including in its Annual Report on Form 10-K for the fiscal year ended October 1, 2011, filed with the SEC on November 30, 2011 (the "2011 Form 10-K"), in January 2011, the U.S. Department of Commerce ("DOC") and the U.S. Attorney's Office for the District of Minnesota ("USAO") notified the Company that they were investigating why the Company had not disclosed, on the U.S. Government's Online Representations and Certifications Application ("ORCA Certification"), that the Company had pled guilty in 2008 to two misdemeanors in regard to making false statements related to certain export matters in 2003. On January 12, 2011, the DOC issued to the Company an administrative subpoena requesting, among other items, that the Company preserve, retain and produce to the U.S. Government certain documents related to the Company's ORCA Certifications. On April 1, 2011, the Company's Board of Directors authorized its Audit Committee to serve as a special committee to initiate an independent review and to oversee an investigation by independent counsel of the events giving rise to the USAO and DOC investigation. On April 7, 2011, the DOC issued to the Company an additional administrative subpoena requesting further information relating to the Company's ORCA Certifications and U.S. Government contracting compliance policies, and in July 2011, the USAO expanded the scope of its inquiry to include the Company's compliance record and practices in areas including export controls and government contracts. The Company has been responding to information requests from the USAO and DOC, and the USAO has issued grand jury subpoenas to certain third party individuals. The Company is cooperating with the agencies and has conducted its own review of these matters. There have been no material developments in the first six-months of the Company's fiscal year 2012 with respect to the investigation by the USAO or DOC. The Company's known costs related to the investigation in the first six-months of fiscal 2012 and 2011 totaled $0.3 million and $0.4 million, respectively. While the Company continues to respond to the government's requests as appropriate, the Company is presently unable to determine the likely outcome or range of loss, if any, from the investigation or predict with certainty the timeline for the resolution of the investigation.

11. Legal Matters

As previously reported by the Company, including in its Annual Report on Form 10-K for the fiscal year ended October 1, 2011, filed with the SEC on November 30, 2011 (the "2011 Form 10-K"), in January 2011, the U.S. Department of Commerce ("DOC") and the U.S. Attorney's Office for the District of Minnesota ("USAO") notified the Company that they were investigating why the Company had not disclosed, on the U.S. Government's Online Representations and Certifications Application ("ORCA Certification"), that the Company had pled guilty in 2008 to two misdemeanors in regard to making false statements related to certain export matters in 2003. On January 12, 2011, the DOC issued to the Company an administrative subpoena requesting, among other items, that the Company preserve, retain and produce to the U.S. Government certain documents related to the Company's ORCA Certifications. On April 1, 2011, the Company's Board of Directors authorized its Audit Committee to serve as a special committee to initiate an independent review and to oversee an investigation by independent counsel of the events giving rise to the USAO and DOC investigation. On April 7, 2011, the DOC issued to the Company an additional administrative subpoena requesting further information relating to the Company's ORCA Certifications and U.S. Government contracting compliance policies, and in July 2011, the USAO expanded the scope of its inquiry to include the Company's compliance record and practices in areas including export controls and government contracts.

The Company has been responding to information requests from the USAO and DOC, and the USAO has issued grand jury subpoenas to certain third party individuals. The Company is cooperating with the agencies and has conducted its own review of these matters. There have been no material developments in the first six-months of the Company's fiscal year 2012 with respect to the investigation by the USAO or DOC. The Company's known costs related to the investigation in the first six-months of fiscal 2012 and 2011 totaled $0.3 million and $0.4 million, respectively. While the Company continues to respond to the government's requests as appropriate, the Company is presently unable to determine the likely outcome or range of loss, if any, from the investigation or predict with certainty the timeline for the resolution of the investigation.