Debt	6 Months Ended
Sep. 01, 2012
Debt Disclosure [Abstract]
Debt	Debt The Company maintains an $80.0 million revolving credit facility, which expires in January 2014. No borrowings were outstanding as of September 1, 2012 or March 3, 2012. The credit facility requires the Company to maintain a minimum level of net worth as defined in the credit facility based on certain quarterly financial calculations. The minimum required net worth computed in accordance with the credit agreement at September 1, 2012 was $279.5 million, whereas the Company’s net worth as defined in the credit facility was $323.1 million. The credit facility also requires that the Company maintain an adjusted debt-to-EBITDA ratio of not more than 2.75. This ratio is computed quarterly, with EBITDA computed on a rolling four-quarter basis. For purposes of calculating the adjusted debt in the adjusted debt-to-EBITDA ratio, the Company reduces non-credit facility debt for up to $25 million to the extent of unrestricted cash balances, cash equivalents and short-term marketable securities available for sale in excess of $15 million. The Company’s ratio was 0.12 at September 1, 2012. If the Company is not in compliance with either of these covenants, the lenders may terminate the commitment and/or declare any loan then outstanding to be immediately due and payable. At September 1, 2012, the Company was in compliance with the financial covenants of the credit facility. During the first quarter of fiscal 2013, $10.0 million of industrial development bonds were issued and made available for current and future investment in the Company’s storefront and entrance business in Michigan. The interest rate on the bonds resets weekly and is equal to the market rate of interest earned for similar revenue bonds or other tax-free securities. The bonds will mature in April 2042. The proceeds are reported as restricted investments in the consolidated balance sheet until disbursed. $2.0 million of proceeds were disbursed during the first six months of fiscal 2013. Debt at September 1, 2012, consists of $12.0 million of recovery zone facility bonds, $18.4 million of industrial development bonds and other debt held by GlassecViracon. The industrial development and recovery zone facility bonds mature in fiscal years 2021 through 2043, and the other debt matures in fiscal years 2013 through 2021. The fair value of the industrial development and recovery zone facility bonds approximates carrying value at September 1, 2012 due to the variable interest rates on these instruments. The bonds are classified as level 2 within the fair value hierarchy. Interest payments were $0.3 million and $0.5 million for the six-months ended September 1, 2012 and August 27, 2011, respectively, and primarily relate to fees associated with our revolving credit facility.

Debt

The Company maintains an $80.0 million revolving credit facility, which expires in January 2014. No borrowings were outstanding as of September 1, 2012 or March 3, 2012. The credit facility requires the Company to maintain a minimum level of net worth as defined in the credit facility based on certain quarterly financial calculations. The minimum required net worth computed in accordance with the credit agreement at September 1, 2012 was $279.5 million, whereas the Company’s net worth as defined in the credit facility was $323.1 million. The credit facility also requires that the Company maintain an adjusted debt-to-EBITDA ratio of not more than 2.75. This ratio is computed quarterly, with EBITDA computed on a rolling four-quarter basis. For purposes of calculating the adjusted debt in the adjusted debt-to-EBITDA ratio, the Company reduces non-credit facility debt for up to $25 million to the extent of unrestricted cash balances, cash equivalents and short-term marketable securities available for sale in excess of $15 million. The Company’s ratio was 0.12 at September 1, 2012. If the Company is not in compliance with either of these covenants, the lenders may terminate the commitment and/or declare any loan then outstanding to be immediately due and payable. At September 1, 2012, the Company was in compliance with the financial covenants of the credit facility.

During the first quarter of fiscal 2013, $10.0 million of industrial development bonds were issued and made available for current and future investment in the Company’s storefront and entrance business in Michigan. The interest rate on the bonds resets weekly and is equal to the market rate of interest earned for similar revenue bonds or other tax-free securities. The bonds will mature in April 2042. The proceeds are reported as restricted investments in the consolidated balance sheet until disbursed. $2.0 million of proceeds were disbursed during the first six months of fiscal 2013.

Debt at September 1, 2012, consists of $12.0 million of recovery zone facility bonds, $18.4 million of industrial development bonds and other debt held by GlassecViracon. The industrial development and recovery zone facility bonds mature in fiscal years 2021 through 2043, and the other debt matures in fiscal years 2013 through 2021. The fair value of the industrial development and recovery zone facility bonds approximates carrying value at September 1, 2012 due to the variable interest rates on these instruments. The bonds are classified as level 2 within the fair value hierarchy.

Interest payments were $0.3 million and $0.5 million for the six-months ended September 1, 2012 and August 27, 2011, respectively, and primarily relate to fees associated with our revolving credit facility.