CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
OPERATING ACTIVITIES:
Net income	$ 8,688	$ 9,122	$ 23,008
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	3,763	3,807	3,675
Deferred tax provision	(225)	1,210	206
Provision for doubtful accounts	211	257	240
Stock-based compensation		332	399
Excess tax benefit from stock-based compensation	(225)	(426)	(1,284)
Issuance of non-employee director shares	75	75	100
(Gain) Loss on disposals of equipment	(2)	(1)
Changes in operating assets and liabilities:
Accounts receivable	(21,993)	1,884	(1,365)
Inventories	(8,506)	3,033	(9,360)
Prepaid expenses	(173)	270	1,338
Accounts payable	16,164	(8,893)	5,886
Accrued liabilities	3,415	(4,561)	5,495
Net cash flows from operating activities	1,192	6,109	28,338
INVESTING ACTIVITIES:
Purchases of property, plant, and equipment	(2,430)	(2,889)	(3,961)
Proceeds from sale of equipment	19	20	1,017
Payments received on notes receivables	76	33	177
Net cash flows from investing activities	(2,335)	(2,836)	(2,767)
FINANCING ACTIVITIES:
Payments on long-term obligations		(5)	(47)
Payments of cash dividends	(6,294)	(5,762)	(5,546)
Additions to deferred financing costs		(10)
Proceeds from exercise of stock options	621	851	2,766
Excess tax benefit from stock-based compensation	225	426	1,284
Payments for common stock repurchased			(20,000)
Net cash flows from financing activities	(5,448)	(4,500)	(21,543)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND TEMPORARY INVESTMENTS	864	(335)	(209)
NET CHANGE IN CASH AND TEMPORARY INVESTMENTS	(5,727)	(1,562)	3,819
CASH AND TEMPORARY INVESTMENTS, beginning of year	48,591	50,153	46,334
CASH AND TEMPORARY INVESTMENTS, end of year	42,864	48,591	50,153
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash payments for interest	912	1,070	968
Cash payments for income taxes, net of refunds	$ 2,419	$ 3,858	$ 12,578