Consolidated Balance Sheets (Parenthetical) (USD $)	Jan. 31, 2013	Jan. 31, 2012
CURRENT ASSETS:
Accounts receivable, allowance for doubtful accounts	$ 847,000	$ 671,000
SHAREHOLDERS' EQUITY:
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authorized (in shares)	2,000,000	2,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	20,000,000	20,000,000
Common stock, shares issued (in shares)	11,475,000	11,306,000
Common stock, shares outstanding (in shares)	11,475,000	11,306,000