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Securities Available for Sale (Details) (State and Municipal Obligations [Member], USD $)
In Thousands, unless otherwise specified
Jan. 31, 2013
Jan. 31, 2012
State and Municipal Obligations [Member]
   
Fair value, amortized cost and gross unrealized gains and losses of the securities    
Amortized Cost $ 8,499 $ 11,313
Gross Unrealized Gains 10 23
Gross Unrealized Losses      
Fair Value $ 8,509 $ 11,336