CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
	Apr. 30, 2013	Apr. 30, 2012
Cash flows from operating activities
Net income	$ 230,255	$ 1,258,698
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	537,160	487,599
Stock-based compensation	103,451	441,401
Deferred income taxes	(78,683)	(209,278)
(Gain)/loss on sale of property and equipment, net	(19,500)	1,080
Allowance for doubtful accounts	(751)	(38,862)
Changes in operating assets and liabilities:
Accounts receivable	3,713,797	2,171,197
Inventories	(161,868)	(1,361,633)
Prepaid expenses, deposits and other assets	195,949	123,755
Accounts payable and accrued expenses	569,867	(862,836)
Customers' advances	1,819,481	(1,036,453)
Accrued pension retirement benefits	86,280	62,569
Other non-current liabilities	549	549
Net cash provided by operating activities	6,995,987	1,037,786
Cash flows from investing activities
Proceeds from sale of property and equipment	19,500	0
Acquisitions of property and equipment	(258,735)	(474,884)
Purchases of investments	(253,323)	(763,264)
Proceeds from maturities of investments	763,264	756,073
Net cash provided by (used in) investing activities	270,706	(482,075)
Cash flows from financing activities
Reduction of debt	(91,347)	(387,451)
Exercise of stock options	123,210	0
Payment of dividends	(1,065,522)	(1,042,183)
Purchase of treasury shares	(133,032)	0
Net cash used in financing activities	(1,166,691)	(1,429,634)
Effect of exchange rate changes on cash	(7,307)	11,495
Net increase (decrease) in cash and cash equivalents	6,092,695	(862,428)
Cash and cash equivalents at February 1	33,305,908	34,581,394
Cash and cash equivalents at April 30	39,398,603	33,718,966
Supplemental disclosure of cash flow information:
Cash paid for interest	39,104	43,436
Cash paid for income taxes	$ 110,360	$ 370,703