CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (unaudited) (USD $)	Common Shares [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss)/Income [Member]	Treasury Shares [Member]	Total
Balances at Jan. 31, 2012	$ 1,592,868	$ 4,058,735	$ 96,228,764	$ (7,718,883)	$ (10,339,513)	$ 83,821,971
Net income	0	0	1,258,698	0	0	1,258,698
Other comprehensive income (loss), net of tax	0	0	0	109,568	0	109,568
Dividends	0	0	(1,043,259)	0	0	(1,043,259)
Stock-based compensation	0	441,401	0	0	0	441,401
Balances at Apr. 30, 2012	1,592,868	4,500,136	96,444,203	(7,609,315)	(10,339,513)	84,588,379
Balances at Jan. 31, 2013	1,592,868	4,899,188	100,054,279	(7,613,536)	(10,250,423)	88,682,376
Net income	0	0	230,255	0	0	230,255
Other comprehensive income (loss), net of tax	0	0	0	(145,204)	0	(145,204)
Dividends	0	0	(1,066,733)	0	0	(1,066,733)
Stock-based compensation	0	103,451	0	0	0	103,451
Stock option transactions	0	29,570	0	0	93,640	123,210
Purchase of 9,958 treasury shares	0	0	0	0	(133,032)	(133,032)
Balances at Apr. 30, 2013	$ 1,592,868	$ 5,032,209	$ 99,217,801	$ (7,758,740)	$ (10,289,815)	$ 87,794,323