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Summary of Significant Accounting Policies and Related Data (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
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Feb. 27, 2016 | Feb. 28, 2015 | Mar. 01, 2014
Accounting Policies [Line Items] |  |  |
Reporting period monthly lag | 2 months |  |
Fiscal time period | P52W | P52W | P52W
Percentage of net sales recorded on a percentage of completion basis | 25.00% | 25.00% | 26.00%
Research and development expense | $ 8,000 | $ 6,500 | $ 7,800
Cost of Sales |  |  |
Accounting Policies [Line Items] |  |  |
Research and development expense | 2,400 | 2,400 | 2,100
Selling, general and administrative expenses |  |  |
Accounting Policies [Line Items] |  |  |
Advertising expense | $ 1,200 | 1,100 | $ 1,200
Minimum |  |  |
Accounting Policies [Line Items] |  |  |
Performance Period For Percentage Of Completion Contracts | 12 months |  |
Maximum |  |  |
Accounting Policies [Line Items] |  |  |
Performance Period For Percentage Of Completion Contracts | 18 months |  |
Current Liabilities and Other Non Current Liabilities |  |  |
Accounting Policies [Line Items] |  |  |
Reserve for environmental liabilities | $ 1,600 | $ 1,800 |

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- Definition Total costs accrued as of the balance sheet date for environmental loss contingencies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6395460&loc=d3e13647-108346 + Details
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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 + Details
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