Debt	9 Months Ended
Nov. 30, 2013
Debt Disclosure [Abstract]
Debt	Debt During the third quarter of fiscal 2014, the Company entered into an amendment to its existing $100.0 million revolving credit facility. The expiration date was extended by one year, to November 2018 from October 2017, and the letter of credit facility was reduced to $50.0 million from $60.0 million, the outstanding amounts of which decrease the available commitment. No other provisions of the original agreement were materially amended by the amended credit agreement. No borrowings were outstanding under the facility as of November 30, 2013 or March 2, 2013. 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 November 30, 2013 was $280.4 million, whereas the Company’s net worth as defined in the credit facility was $347.2 million. The credit facility also requires that the Company maintain an adjusted debt-to-EBITDA ratio of not more than 3.00. 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 0.32 at November 30, 2013. 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 November 30, 2013, the Company was in compliance with the financial covenants of the credit facility. During the first quarter of fiscal 2014, $10.0 million of recovery zone facility bonds that had previously been issued for future investment in the Company's Architectural Glass fabrication facility in Utah were redeemed at par. In connection with redeeming this debt in the first quarter of fiscal 2014, the Company expensed $0.2 million of debt issue costs that had previously been deferred and were being amortized over the term of the debt. Debt at November 30, 2013 consists of $20.4 million of industrial revenue bonds, and $0.3 million of other debt. The industrial revenue bonds mature in fiscal years 2021 through 2043, and the other debt matures in fiscal years 2014 through 2021. The fair value of the industrial revenue bonds approximates carrying value at November 30, 2013, due to the variable interest rates on these instruments. The bonds are classified as Level 2 within the fair value hierarchy. Interest payments were $0.5 million and $0.6 million for the nine months ended November 30, 2013 and December 1, 2012, respectively, and primarily relate to fees associated with our revolving credit facility.

Debt

During the third quarter of fiscal 2014, the Company entered into an amendment to its existing $100.0 million revolving credit facility. The expiration date was extended by one year, to November 2018 from October 2017, and the letter of credit facility was reduced to $50.0 million from $60.0 million, the outstanding amounts of which decrease the available commitment. No other provisions of the original agreement were materially amended by the amended credit agreement. No borrowings were outstanding under the facility as of November 30, 2013 or March 2, 2013.

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 November 30, 2013 was $280.4 million, whereas the Company’s net worth as defined in the credit facility was $347.2 million. The credit facility also requires that the Company maintain an adjusted debt-to-EBITDA ratio of not more than 3.00. 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 0.32 at November 30, 2013. 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 November 30, 2013, the Company was in compliance with the financial covenants of the credit facility.

During the first quarter of fiscal 2014, $10.0 million of recovery zone facility bonds that had previously been issued for future investment in the Company's Architectural Glass fabrication facility in Utah were redeemed at par. In connection with redeeming this debt in the first quarter of fiscal 2014, the Company expensed $0.2 million of debt issue costs that had previously been deferred and were being amortized over the term of the debt.

Debt at November 30, 2013 consists of $20.4 million of industrial revenue bonds, and $0.3 million of other debt. The industrial revenue bonds mature in fiscal years 2021 through 2043, and the other debt matures in fiscal years 2014 through 2021. The fair value of the industrial revenue bonds approximates carrying value at November 30, 2013, due to the variable interest rates on these instruments. The bonds are classified as Level 2 within the fair value hierarchy.

Interest payments were $0.5 million and $0.6 million for the nine months ended November 30, 2013 and December 1, 2012, respectively, and primarily relate to fees associated with our revolving credit facility.