CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	9 Months Ended
	Oct. 31, 2021	Oct. 31, 2020
Cash flows from operating activities:
Net income	$ 9,991	$ 27,237
Adjustments to reconcile net income to net cash provided by operating activities
Provision for doubtful accounts	86	315
Deferred income taxes	790	3,194
Depreciation and amortization	1,470	1,425
Stock based and restricted stock compensation	1,025	1,245
Loss on disposal of property and equipment	51	5
Non-cash operating lease expense	229	267
(Increase) decrease in operating assets
Accounts receivable	4,792	(9,249)
Inventories	(3,234)	(808)
Prepaid VAT and other taxes	(979)	(10)
Other assets	1,020	(484)
Increase (decrease) in operating liabilities
Accounts payable	(965)	810
Accrued expenses and other liabilities	(1,052)	4,365
Operating lease liabilities	(461)	(286)
Net cash provided by operating activities	12,591	28,026
Cash flows from investing activities:
Purchases of property and equipment	(581)	(1,325)
Investments	(2,783)
Net cash (used in) investing activities:	(3,364)	(1,325)
Cash flows from financing activities:
Loan repayments, short-term		(1,319)
Loan borrowings, short-term		158
Purchase of treasury stock under stock repurchase program	(5,887)
Shares returned to pay employee taxes under restricted stock program	(622)	(79)
Net cash (used in) financing activities	(6,509)	(1,240)
Effect of exchange rate changes on cash and cash equivalents	219	119
Net increase in cash and cash equivalents	2,937	25,580
Cash and cash equivalents at beginning of period	52,596	14,606
Cash and cash equivalents at end of period	55,533	40,186
Supplemental disclosure of cash flow information:
Cash paid for interest	7	22
Cash paid for taxes	4,217	2,376
Noncash investing and financing activities
Leased assets obtained in exchange for operating lease liabilities	$ 3,238	$ 870