CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
OPERATING ACTIVITIES:
Net income	$ 9,122	$ 23,008	$ 11,707
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	3,807	3,675	3,533
Deferred tax provision	1,210	206	6,008
Provision for doubtful accounts	257	240	220
Stock-based compensation	332	399	399
Excess tax benefit from stock-based compensation	(426)	(1,284)
Issuance of non-employee director shares	75	100	93
(Gain) Loss on disposals of equipment	(1)		(28)
Changes in operating assets and liabilities:
Accounts receivable	1,884	(1,365)	(16,378)
Inventories	3,033	(9,360)	(4,081)
Prepaid expenses	270	1,338	(1,283)
Other long-term assets			(257)
Accounts payable	(8,893)	5,886	15,362
Accrued liabilities	(4,561)	5,495	2,230
Net cash flows from operating activities	6,109	28,338	17,525
INVESTING ACTIVITIES:
Purchases of property, plant, and equipment	(2,889)	(3,961)	(5,279)
Proceeds from sale of equipment	20	1,017	24
Payments received on notes receivables	33	177	390
Net cash flows from investing activities	(2,836)	(2,767)	(4,865)
FINANCING ACTIVITIES:
Payments on long-term obligations	(5)	(47)	(178)
Payments of cash dividends	(5,762)	(5,546)	(1,163)
Additions to deferred financing costs	(10)		(51)
Proceeds from exercise of stock options	851	2,766	443
Excess tax benefit from stock-based compensation	426	1,284
Payments for common stock repurchased		(20,000)
Net cash flows from financing activities	(4,500)	(21,543)	(949)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND TEMPORARY INVESTMENTS	(335)	(209)	(1,537)
NET CHANGE IN CASH AND TEMPORARY INVESTMENTS	(1,562)	3,819	10,174
CASH AND TEMPORARY INVESTMENTS, beginning of year	50,153	46,334	36,160
CASH AND TEMPORARY INVESTMENTS, end of year	48,591	50,153	46,334
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash payments for interest	1,070	968	692
Cash payments for income taxes, net of refunds	$ 3,858	$ 12,578	$ 1,150