CONSOLIDATED STATEMENT OF CASH FLOWS (unaudited) (USD $)	9 Months Ended
Oct. 31, 2011	Oct. 31, 2010
Cash flows from operating activities
Net income	$ 4,984,627	$ 4,383,007
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,433,018	1,344,262
Deferred income taxes	(4,646)	(1,809)
(Gain) on sale of property and equipment, net	(26,003)	(13,236)
Stock-based compensation	539,478	484,416
Allowance for doubtful accounts	53,654	(31,473)
Change in operating assets and liabilities:
Accounts receivable	(839,188)	364,097
Inventories	(2,138,267)	214,319
Prepaid expenses, deposits and other assets	(246,406)	(269,599)
Accounts payable and accrued expenses	2,028,062	1,839,376
Customers' advances	2,451,901	(324,249)
Accrued pension retirement benefits	(2,747,053)	(33,569)
Other non-current liabilities	1,647	1,647
Net cash provided by operating activities	5,490,824	7,957,189
Cash flows from investing activities
Proceeds from sale of property and equipment	33,848	36,037
Acquisitions of property and equipment	(1,636,866)	(1,128,403)
Purchases of investments	(1,010,534)	(497,155)
Proceeds from maturities of investments	497,155	240,893
Payment for aquisition of business	0	(955,268)
Net cash used in investing activities	(2,116,397)	(2,303,896)
Cash flows from financing activities
Proceeds from new borrowing	426,802	189,074
Reduction of debt	(625,413)	(584,864)
Exercise of stock options	42,800	547,232
Payments of dividends	(2,902,505)	(2,631,441)
Purchases of treasury shares	(42,800)	(660,019)
Net cash used in financing activities	(3,101,116)	(3,140,018)
Effect of exchange rate changes on cash	34	38,386
Net increase in cash and cash equivalents	273,345	2,551,661
Cash and cash equivalents at February 1	32,400,814	30,662,104
Cash and cash equivalents at October 31	$ 32,674,159	$ 33,213,765

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation).