CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 60,430	$ 46,018	$ 43,029
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	20,457	17,637	17,295
Amortization of deferred financing cost	346	635	699
Increase (decrease) to allowance for doubtful accounts	210	3,371	(497)
Increase to inventory reserves	5,371	1,864	3,553
Amortization of deferred gain on sale of buildings	(1,048)	(1,048)	(1,048)
Equity (income) loss from joint ventures	(2,029)	(976)	822
Employee Stock Ownership Plan allocation	2,021	2,208	1,826
Stock-based compensation	6,127	5,379	4,843
Excess tax benefits related to the exercise of employee stock grants	(849)	(1,254)	(1,269)
Increase in deferred income taxes	(691)	(1,494)	(4,959)
Decrease in unrecognized tax benefit	0	0	(350)
Increase (decrease) in tax valuation allowance	65	87	(342)
Loss on discontinued operations, net of tax	1,982	2,102	9,870
Change in assets and liabilities:
(Increase) decrease in accounts receivable	(8,826)	(1,996)	1,755
Increase in inventories	(20,155)	(12,503)	(6,712)
(Increase) decrease in prepaid expenses and other current assets	3,475	367	(959)
Increase (decrease) in accounts payable	7,345	1,882	(4,329)
Increase (decrease) in sundry payables and accrued expenses	20,990	1,874	(7,697)
Net change in other assets and liabilities	2,584	1,018	(8,543)
Net cash provided by operating activities	97,805	65,171	46,987
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions of and investments in businesses	(67,289)	0	(37,726)
Capital expenditures	(20,921)	(18,047)	(13,904)
Other investing activities	192	36	430
Net cash used in investing activities	(88,018)	(18,011)	(51,200)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net borrowings (repayments) under line-of-credit agreements	7,384	(9,131)	35,152
Net borrowings (payments) of long-term debt and capital lease obligations	89	(170)	182
Purchase of treasury stock	(377)	(19,623)	(10,000)
Increase (decrease) in overdraft balances	(254)	851	522
Payments of debt issuance costs	0	(748)	0
Proceeds from exercise of employee stock options	0	109	96
Excess tax benefits related to the exercise of employee stock grants	849	1,254	1,269
Dividends paid	(15,447)	(13,697)	(11,905)
Net cash provided by (used in) financing activities	(7,756)	(41,155)	15,316
Effect of exchange rate changes on cash	(1,035)	(933)	(2,934)
Net increase (decrease) in cash and cash equivalents	996	5,072	8,169
CASH AND CASH EQUIVALENTS at beginning of year	18,800	13,728	5,559
CASH AND CASH EQUIVALENTS at end of year	19,796	18,800	13,728
Cash paid during the year for:
Interest	1,207	901	882
Income taxes	$ 32,505	$ 27,513	$ 27,562