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Note 13 - Foreign Operations (Details Textual) - USD ($) | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
INDIA |  |
Assets, Noncurrent, Total | $ 175,000 | $ 176,000
Foreign [Member] |  |
Assets, Noncurrent, Total | 1,094,000 | 589,000
Liabilities, Total | $ 711,000 | $ 675,000

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