CONSOLIDATED BALANCE SHEETS (USD $)	Jan. 31, 2012	Jan. 31, 2011
Current assets
Cash and cash equivalents	$ 34,581,394	$ 32,400,814
Short-term investments	764,061	497,155
Accounts receivable, net of allowance for doubtful accounts of approximately$491,000 and $444,000, respectively	17,373,121	15,311,322
Inventories	17,847,143	15,474,430
Prepaid expenses, deposits and other current assets	1,683,486	1,578,176
Deferred income taxes	186,329	84,155
Total current assets	72,435,534	65,346,052
Property, plant and equipment, net	19,322,436	19,290,808
Goodwill	20,798,913	20,798,913
Other assets	2,952,332	2,610,555
Total assets	115,509,215	108,046,328
Current liabilities
Current portion of debt	657,216	532,540
Accounts payable	7,684,739	4,864,724
Accrued salaries, wages and benefits	1,827,603	1,650,314
Other accrued expenses	2,357,929	2,286,043
Dividend payable	1,042,297	967,445
Customers' advances	3,232,600	907,107
Total current liabilities	16,802,384	11,208,173
Long-term debt	2,687,971	3,011,988
Accrued pension retirement benefits	10,618,047	6,553,262
Other non-current liabilities	56,391	54,195
Deferred income taxes	1,522,451	2,745,786
Total liabilities	31,687,244	23,573,404
Shareholders' equity
Common shares, $.10 par value; 36,000,000 shares authorized, 15,928,679 shares issued, of which 1,250,051 and 1,270,417 shares were reacquired and held in treasury at the respective dates	1,592,868	1,592,868
Additional paid-in capital	4,058,735	3,448,249
Retained earnings	96,228,764	93,113,247
Accumulated other comprehensive loss	(7,718,883)	(3,201,767)
Treasury shares, at cost	(10,339,513)	(10,479,673)
Total shareholders' equity	83,821,971	84,472,924
Total liabilities and shareholders' equity	$ 115,509,215	$ 108,046,328