Note 12 - Major Customers (Details) (Customer Concentration Risk [Member])	12 Months Ended	0 Months Ended	12 Months Ended
Mar. 31, 2014 FedEx [Member] Sales [Member]	Mar. 31, 2013 FedEx [Member] Sales [Member]	Mar. 31, 2014 FedEx [Member] Accounts Receivable [Member]	Mar. 31, 2013 FedEx [Member] Accounts Receivable [Member]	Mar. 31, 2014 United States Air Force [Member] Sales [Member]	Mar. 31, 2013 United States Air Force [Member] Sales [Member]
Note 12 - Major Customers (Details) [Line Items]
Concentration Risk, Percentage	52.00%	48.00%	33.00%	34.00%	1.00%	15.00%

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://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

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-Section 50

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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