CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
OPERATING ACTIVITIES:
Net income	$ 14,838	$ 8,688	$ 9,122
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	4,015	3,763	3,807
Loss on the deconsolidation of subsidiary	83
(Gain) Loss on disposals of equipment	(39)	(2)	(1)
Deferred tax provision	147	(225)	1,210
Provision for doubtful accounts	243	211	257
Stock-based compensation			332
Excess tax benefit from stock-based compensation	(27)	(225)	(426)
Issuance of non-employee director shares	96	75	75
Changes in operating assets and liabilities:
Accounts receivable	(36,366)	(21,993)	1,884
Inventories	(3,284)	(8,506)	3,033
Prepaid expenses	151	(173)	270
Accounts payable	24,662	16,164	(8,893)
Accrued liabilities	5,394	3,415	(4,561)
Net cash flows from operating activities	9,913	1,192	6,109
INVESTING ACTIVITIES:
Purchases of property, plant, and equipment	(5,345)	(2,430)	(2,889)
Proceeds from sale of equipment	20	19	20
Payments received on notes receivables	24	76	33
Net cash flows from investing activities	(5,301)	(2,335)	(2,836)
FINANCING ACTIVITIES:
Payments on long-term obligations			(5)
Payments of cash dividends	(6,778)	(6,294)	(5,762)
Additions to deferred financing costs			(10)
Proceeds from exercise of stock options	186	621	851
Excess tax benefit from stock-based compensation	27	225	426
Net cash flows from financing activities	(6,565)	(5,448)	(4,500)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND TEMPORARY INVESTMENTS	(1,314)	864	(335)
NET CHANGE IN CASH AND TEMPORARY INVESTMENTS	(3,267)	(5,727)	(1,562)
CASH AND TEMPORARY INVESTMENTS, beginning of year	42,864	48,591	50,153
CASH AND TEMPORARY INVESTMENTS, end of year	39,597	42,864	48,591
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash payments for interest	1,015	912	1,070
Cash payments for income taxes, net of refunds	$ 6,454	$ 2,419	$ 3,858