Major Customer Information	12 Months Ended
Jan. 31, 2013
Major Customer Information [Abstract]
Major Customer Information Disclosure [Text Block]	12. Major Customer Information Direct and indirect sales to U.S. Government agencies, when combined, amounted to approximately $10,275,000, representing 33%, and $13,112,000, representing 44%, for the years ended January 31, 2013 and 2012, respectively. Of these amounts, approximately $5,901,000 and $6,365,000 were sales directly to U.S. Government agencies for the years ended January 31, 2013 and 2012, respectively. The remaining amounts of $4,374,000 and $6,747,000 represent sales to commercial customers for government applications for the years ended January 31, 2013 and 2012, respectively. Foreign sales for the years ended January 31, 2013 and 2012 were approximately $8,085,000 and $5,903,000, respectively. Substantially all foreign sales contracts are payable in U.S. dollars. Sales to the U.S. Government, Korea Aerospace Industries, Carp Industries and The Boeing Company represented approximately 19%, 11%, 10% and 10% of total sales for the year ended January 31, 2013, respectively. Accounts receivable at January 31, 2013 included approximately $1,082,000 due from Korea Aerospace Industries and $704,000 due from Carp Industries. Accounts receivable at January 31, 2012 included approximately $1,118,000 due from Alenia Aermacchi, $882,000 due from the U.S. Government and $654,000 due from Carp Industries. No other customer represented greater than 10% of accounts receivable at January 31, 2013 or 2012.

Major Customer Information

12 Months Ended

Jan. 31, 2013

Major Customer Information [Abstract]

Major Customer Information Disclosure [Text Block]

12. Major Customer Information

Direct and indirect sales to U.S. Government agencies, when combined, amounted to approximately $10,275,000, representing 33%, and $13,112,000, representing 44%, for the years ended January 31, 2013 and 2012, respectively. Of these amounts, approximately $5,901,000 and $6,365,000 were sales directly to U.S. Government agencies for the years ended January 31, 2013 and 2012, respectively. The remaining amounts of $4,374,000 and $6,747,000 represent sales to commercial customers for government applications for the years ended January 31, 2013 and 2012, respectively.

Foreign sales for the years ended January 31, 2013 and 2012 were approximately $8,085,000 and $5,903,000, respectively. Substantially all foreign sales contracts are payable in U.S. dollars.

Sales to the U.S. Government, Korea Aerospace Industries, Carp Industries and The Boeing Company represented approximately 19%, 11%, 10% and 10% of total sales for the year ended January 31, 2013, respectively. Accounts receivable at January 31, 2013 included approximately $1,082,000 due from Korea Aerospace Industries and $704,000 due from Carp Industries. Accounts receivable at January 31, 2012 included approximately $1,118,000 due from Alenia Aermacchi, $882,000 due from the U.S. Government and $654,000 due from Carp Industries. No other customer represented greater than 10% of accounts receivable at January 31, 2013 or 2012.