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Fair value of financial instruments
9 Months Ended
Oct. 31, 2011
Fair value of financial instruments  
Fair Value Disclosures [Text Block]
Fair value of financial instruments. The Company entered into an interest rate swap agreement in May 2010. At October 31, 2011, the interest rate swap agreement was in effect with a notional value of $9.0 million maturing in 2013. The swap agreement, which reduces the exposure to market risks from changing interest rates, exchanges the variable rate to fixed interest rate payments of 2.23% plus LIBOR margin.
 
 
Level 2 significant other observable inputs
 
 
Nine Months Ended October 31,
 
 
2011

2010

Other long-term liabilities
 

$212


$565