Note 7 - Taxes on Income (Details) - Deferred Income Tax Asset (Liability) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Deferred income tax assets:
Pension accruals	$ 3,340,000	$ 1,794,000
Operating reserves and other accruals	1,069,000	861,000
Tax carrying value in excess of book basis of goodwill	621,000	545,000
Deferred income tax liabilities:
Book carrying value in excess of tax basis of property	(572,000)	(605,000)
Deferred expenses	(1,013,000)	(716,000)
Net deferred income tax asset	$ 3,445,000us-gaap_DeferredTaxAssetsLiabilitiesNet	$ 1,879,000us-gaap_DeferredTaxAssetsLiabilitiesNet

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from intangible assets including goodwill.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from other reserves and accruals not separately disclosed.

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