CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)	3 Months Ended
	Apr. 30, 2021	Apr. 30, 2020
Cash flows from operating activities:
Net income	$ 4,641,000	$ 8,634,000
Adjustments to reconcile net income to net cash provided by operating activities
Provision for doubtful accounts	173,000	150,000
Deferred income taxes	(75,000)	2,314,000
Depreciation and amortization	499,000	453,000
Stock based and restricted stock compensation	336,000	163,000
Gain on disposal of property and equipment	17,000	7,000
Non-cash operating lease expense	117,000	214,000
(Increase) decrease in operating assets
Accounts receivable	2,328,000	(7,589,000)
Inventories	(57,000)	6,656,000
Prepaid VAT and other taxes	(959,000)	(288,000)
Other current assets	634,000	(1,199,000)
Increase (decrease) in operating liabilities
Accounts payable	(128,000)	(1,008,000)
Accrued expenses and other liabilities	1,007,000	2,017,000
Operating lease liabilities	(214,000)	(271,000)
Net cash provided by operating activities	8,318,000	10,253,000
Cash flows from investing activities:
Purchases of property and equipment	(135,000)	(194,000)
Cash flows from financing activities:
Loan repayments, short-term	0	(1,181,000)
Loan borrowings, short-term	0	158,000
Shares returned to pay employee taxes under restricted stock program	(461,000)	(20,000)
Net cash (used in) financing activities	(461,000)	(1,043,000)
Effect of exchange rate changes on cash and cash equivalents	3,000	(149,000)
Net increase in cash and cash equivalents	7,726,000	8,867,000
Cash and cash equivalents at beginning of period	52,596,000	14,606,000
Cash and cash equivalents at end of period	60,322,000	23,473,000
Supplemental disclosure of cash flow information:
Cash paid for interest	1,000	17,000
Cash paid for taxes	1,152,000	861,000
Noncash investing and financing activities
Leased assets obtained in exchange for operating lease liabilities	$ 268,000	$ 215,000