Note 15 - Customer and Supplier Concentrations (Details Textual) - Customer Concentration Risk [Member] - Revenue Benchmark [Member]	12 Months Ended
Mar. 03, 2019	Feb. 25, 2018	Feb. 26, 2017
General Electric [Member]
Concentration Risk, Percentage	42.80%	30.50%	14.70%
Aerospace [Member]
Concentration Risk, Percentage		10.60%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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