CONSOLIDATED BALANCE SHEETS (USD $)	Jan. 31, 2013	Jan. 31, 2012
Current assets
Cash and cash equivalents	$ 33,305,908	$ 34,581,394
Short-term investments	1,022,266	764,061
Accounts receivable, net of allowance for doubtful accounts of $288,102 and $491,138, respectively	19,094,589	17,373,121
Inventories	17,870,720	17,847,143
Prepaid expenses, deposits and other current assets	1,848,049	1,683,486
Deferred income taxes	1,043	186,329
Total current assets	73,142,575	72,435,534
Property, plant and equipment, net	19,499,593	19,322,436
Goodwill	20,798,913	20,798,913
Other assets	2,814,100	2,952,332
Total assets	116,255,181	115,509,215
Current liabilities
Current portion of debt	369,622	657,216
Accounts payable	6,081,691	7,684,739
Accrued salaries, wages and benefits	1,775,438	1,827,603
Other accrued expenses	2,780,051	2,357,929
Dividend payable	1,068,862	1,042,297
Customers' advances	1,397,553	3,232,600
Total current liabilities	13,473,217	16,802,384
Long-term debt	2,269,885	2,687,971
Accrued pension retirement benefits	9,652,313	10,618,047
Other non-current liabilities	58,589	56,391
Deferred income taxes	2,118,801	1,522,451
Total liabilities	27,572,805	31,687,244
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	4,899,188	4,058,735
Retained earnings	100,054,279	96,228,764
Accumulated other comprehensive loss	(7,613,536)	(7,718,883)
Treasury shares, at cost	(10,250,423)	(10,339,513)
Total shareholders' equity	88,682,376	83,821,971
Total liabilities and shareholders' equity	$ 116,255,181	$ 115,509,215