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Note 14 - Foreign Revenues and Operations (Detail) (USD $) | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Disclosure on Geographic Areas, Long-Lived Assets in Foreign Countries | $ 460,000 | $ 479,000
Assets | 9,936,000 | 10,105,000
Foreign [Member] |  |
Assets | 518,000 | 593,000
Liabilities | $ 234,000 | $ 129,000

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