Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2020	Jul. 31, 2019
OPERATING ACTIVITIES:
Net income	$ 9,768	$ 21,976
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	8,478	8,122
Change in fair value of acquisition-related contingent consideration	(212)	243
Deferred income taxes	(2,392)	1,575
Share-based compensation expense	3,609	2,548
Other operating activities, net	(237)	1,544
Change in operating assets and liabilities:
Accounts receivable	8,669	(6,762)
Inventories	(204)	(7,326)
Other assets	(420)	107
Operating liabilities	3,525	4,133
Net cash provided by operating activities	30,584	26,160
INVESTING ACTIVITIES:
Capital expenditures	(7,783)	(3,784)
Proceeds from sale or maturity of Investments	336	993
Purchases of investments	(146)	(907)
Proceeds from sale of assets	251	0
Other investing activities	24	20
Net cash used in investing activities	(7,318)	(3,678)
FINANCING ACTIVITIES:
Dividends paid	(9,318)	(9,353)
Payments for common shares repurchased	0	(5,781)
Proceeds from debt	50,150	0
Repayments of debt	(50,000)	0
Payments for redeemable noncontrolling interest	(17,853)	0
Payment of acquisition-related contingent liabilities	0	(717)
Restricted stock units vested and issued	(638)	(2,320)
Employee stock options exercises	(113)	(722)
Other financing activities	(208)	(199)
Net cash used in financing activities	(27,980)	(19,092)
Effect of Exchange Rate on Cash and Cash Equivalents	(180)	(46)
Net Increase (decrease) in Cash and Cash Equivalents	(4,894)	3,344
Cash and Cash Equivalents, Beginning Balance	20,707	65,787
Cash and Cash Equivalents, Ending Balance	15,813	69,131
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Capital expenditures converted from inventories	$ 2,774	$ 0