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INCOME TAXES (Details) - USD ($)
 12 Months Ended
Jan. 31, 2017
Jan. 31, 2016
Jan. 31, 2015
Jan. 31, 2014
Income Tax Disclosure [Abstract]        
Deferred Tax Assets, Valuation Allowance $ 417,000 $ 1,151,000 $ 1,752,000 $ 2,017,000
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount (734,000) (601,000) (265,000)  
Income Taxes Paid 7,090,000 20,253,000 30,142,000  
Proceeds from Income Tax Refunds 150,000 132,000 53,000  
Unrecognized Tax Benefits 1,875,000 $ 987,000 $ 1,658,000  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued 221,000      
Increase in Unrecognized Tax Benefits is Reasonably Possible $ 1,297,000