Statements of Consolidated Cash Flows (Unaudited) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
OPERATING ACTIVITIES
NET INCOME	$ 15,384	$ 7,130
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization	5,076	4,042
Provision for accounts receivable allowances	631	277
Provision for inventory reserves	814	737
Deferred income taxes	(690)	(1,164)
Share-based compensation expense	1,458	1,383
Excess tax benefits from share-based awards	(190)
Net investment in life insurance	(19)	(26)
Unrealized foreign currency gain on hedge contract		(451)
Other - net	58	(5)
Changes in operating assets and liabilities:
Accounts receivable	(17,475)	(3,586)
Inventories	(9,689)	(2,113)
Trade accounts payables and accrued liabilities	7,518	4,446
Income taxes payable	2,755	(627)
Other - net	(3,497)	(3,331)
NET CASH PROVIDED BY OPERATING ACTIVITIES	2,134	6,712
INVESTING ACTIVITIES
Capital expenditures	(6,504)	(6,606)
Proceeds from the sale of property and equipment	168	225
Restricted cash	(330)
NET CASH USED IN INVESTING ACTIVITIES	(6,666)	(6,381)
FINANCING ACTIVITIES
Increase in notes payable to banks	9,990	(3)
Proceeds from the issuance of long-term debt		11,946
Payments of long-term debt	(924)	(11,471)
Dividends paid	(2,189)	(2,167)
Excess tax benefits from share-based awards	190
Proceeds from issuance of common shares	958	84
Purchase of common shares for treasury	(2,518)	(21)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	5,507	(1,632)
Effects of exchange rate changes on cash and cash equivalents	(13)	(686)
Net increase (decrease) in cash and cash equivalents	962	(1,987)
Cash and cash equivalents at beginning of year	22,655	24,097
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 23,617	$ 22,110