Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2015	Jul. 31, 2014
OPERATING ACTIVITIES:
Net income	$ 9,082	$ 18,781
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	8,782	8,373
Change in fair value of acquisition-related contingent consideration	405	363
Loss from equity investment	73	57
Deferred income taxes	(1,301)	(1,769)
Share-based compensation expense	1,436	2,428
Change in operating assets and liabilities:
Accounts receivable	15,824	4,383
Inventories	(559)	3,967
Other assets	(714)	(1,689)
Operating liabilities	(9,090)	(3,863)
Other operating activities, net	(237)	7
Net cash provided by operating activities	23,701	31,038
INVESTING ACTIVITIES:
Capital expenditures	(7,333)	(7,297)
Proceeds (payments) related to business acquisitions	351	(4,711)
Proceeds from sale of assets	1,542	0
Other investing activities, net	(391)	(432)
Net cash used in investing activities	(5,831)	(12,440)
FINANCING ACTIVITIES:
Dividends paid	(9,834)	(8,826)
Payments for common shares repurchased	(10,825)	0
Payments of acquisition-related debt	0	(638)
Payments of acquisition-related contingent liability	(735)	(454)
Debt issuance costs paid	(548)	0
Restricted stock units vested and issued	(458)	0
Employee stock option exercises net of tax benefit	(85)	511
Other financing activities, net	(15)	0
Net cash used in financing activities	(22,500)	(9,407)
Effect of exchange rate changes on cash	(17)	(17)
Net (decrease) increase in cash and cash equivalents	(4,647)	9,174
Cash and cash equivalents at beginning of year	51,949	52,987
Cash and cash equivalents at end of period	$ 47,302	$ 62,161