Note 10 - Segment Information (Details) - Segment Reporting Information (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Segment Reporting Information [Line Items]
Revenue	$ 29,266,000us-gaap_SalesRevenueNet	$ 28,036,000us-gaap_SalesRevenueNet
Operating income	349,000us-gaap_OperatingIncomeLoss	(103,000)us-gaap_OperatingIncomeLoss
Interest expense	58,000us-gaap_InterestExpense	43,000us-gaap_InterestExpense
Income tax expense	151,000us-gaap_IncomeTaxExpenseBenefit	119,000us-gaap_IncomeTaxExpenseBenefit
Net income from continuing operations	169,000	(220,000)
Depreciation and amortization	468,000us-gaap_DepreciationAndAmortization	412,000us-gaap_DepreciationAndAmortization
Capital expenditures	584,000	358,000
Other expense (income), net	(29,000)us-gaap_OtherNonoperatingIncomeExpense	(45,000)us-gaap_OtherNonoperatingIncomeExpense
Income before income tax expense	320,000	(101,000)
UNITED STATES
Segment Reporting Information [Line Items]
Revenue	10,972,000	10,958,000
Operating income	(74,000)	(264,000)
Interest expense	21,000	20,000
Income tax expense	(2,000)
Net income from continuing operations	(93,000)	(284,000)
Depreciation and amortization	320,000	320,000
Capital expenditures	494,000	297,000
Income before income tax expense	(93,000)	(284,000)
International [Member]
Segment Reporting Information [Line Items]
Revenue	18,294,000	17,078,000
Operating income	423,000	161,000
Interest expense	37,000	23,000
Income tax expense	151,000	119,000
Net income from continuing operations	262,000	64,000
Depreciation and amortization	148,000	92,000
Capital expenditures	90,000	61,000
Other expense (income), net	(27,000)	(45,000)
Income before income tax expense	$ 413,000	$ 183,000

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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