CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)	6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020
Cash flows from operating activities:
Net income	$ 7,199,000	$ 17,973,000
Adjustments to reconcile net income to net cash provided by operating activities
Provision for doubtful accounts	21,000	262,000
Deferred income taxes	777,000	1,309,000
Depreciation and amortization	1,040,000	934,000
Stock based and restricted stock compensation	608,000	409,000
Loss on disposal of property and equipment	30,000	9,000
(Increase) decrease in operating assets
Accounts receivable	6,500,000	(2,843,000)
Inventories	(3,153,000)	1,178,000
Prepaid VAT and other taxes	(1,237,000)	7,000
Other assets	566,000	(1,814,000)
Increase (decrease) in operating liabilities
Accounts payable	2,655,000	3,330,000
Accrued expenses and other liabilities	(1,795,000)	2,083,000
Operating lease liabilities	(99,000)	(506,000)
Net cash provided by operating activities	13,112,000	22,331,000
Cash flows from investing activities:
Purchases of property and equipment	(452,000)	(740,000)
Net cash (used in) investing activities:	(452,000)	(740,000)
Cash flows from financing activities:
Loan repayments, short-term	0	(1,319,000)
Loan borrowings, short-term	0	158,000
Purchase of treasury stock under stock repurchase program	(4,994,000)	0
Shares returned to pay employee taxes under restricted stock program	(462,000)	(55,000)
Net cash (used in) financing activities	(5,456,000)	(1,216,000)
Effect of exchange rate changes on cash and cash equivalents	39,000	(36,000)
Net increase in cash and cash equivalents	7,243,000	20,339,000
Cash and cash equivalents at beginning of period	52,596,000	14,606,000
Cash and cash equivalents at end of period	59,839,000	34,945,000
Supplemental disclosure of cash flow information:
Cash paid for interest	5,000	19,000
Cash paid for taxes	2,803,000	1,726,000
Noncash investing and financing activities
Leased assets obtained in exchange for operating lease liabilities	$ 256,000	$ 289,000