CONSOLIDATED BALANCE SHEETS (unaudited) (USD $)	Apr. 30, 2013	Jan. 31, 2013
Current assets
Cash and cash equivalents	$ 39,398,603	$ 33,305,908
Short-term investments	512,325	1,022,266
Accounts receivable, net of allowance for doubtful accounts of $287,351 and $288,102, respectively	15,309,966	19,094,589
Inventories	17,973,142	17,870,720
Prepaid expenses, deposits and other current assets	1,594,453	1,848,049
Deferred income taxes	1,214	1,043
Total current assets	74,789,703	73,142,575
Property, plant and equipment, net	19,161,719	19,499,593
Goodwill	20,798,913	20,798,913
Other assets	2,820,720	2,814,100
Total assets	117,571,055	116,255,181
Current liabilities
Current portion of debt	365,522	369,622
Accounts payable	6,581,059	6,081,691
Accrued salaries, wages and benefits	1,406,130	1,775,438
Other accrued expenses	3,050,415	2,780,051
Dividend payable	1,070,074	1,068,862
Customers' advances	3,217,088	1,397,553
Total current liabilities	15,690,288	13,473,217
Long-term debt	2,170,358	2,269,885
Accrued pension retirement benefits	9,738,594	9,652,313
Other non-current liabilities	59,137	58,589
Deferred income taxes	2,118,355	2,118,801
Total liabilities	29,776,732	27,572,805
Commitments and contingencies
Shareholders' equity
Common shares, $.10 par value; 36,000,000 shares authorized, 15,928,679 shares issued, of which 1,231,824 and 1,250,051 shares were reacquired and held in treasury at the respective dates	1,592,868	1,592,868
Additional paid-in capital	5,032,209	4,899,188
Retained earnings	99,217,801	100,054,279
Accumulated other comprehensive loss	(7,758,740)	(7,613,536)
Treasury shares, at cost	(10,289,815)	(10,250,423)
Total shareholders' equity	87,794,323	88,682,376
Total liabilities and shareholders' equity	$ 117,571,055	$ 116,255,181