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Note 2 - Summary of Significant Accounting Policies (Details Textual) ¥ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Jul. 20, 2015 USD ($) | Dec. 31, 2014 CNY (¥)
Government Grants, Current | $ 288,000 | $ 309,000 |  |  |
Number of Reportable Segments | 1 |  |  |  |
Assets | $ 14,908,000 | $ 10,970,000 |  |  |
Depreciation of RMB Against U.S. Dollar, Percent | 6.30% | 4.40% | 2.49% |  |
Cash Equivalents, at Carrying Value | $ 0 | $ 0 |  |  |
Allowance for Doubtful Accounts Receivable | 0 | 0 |  |  |
Capital Lease Obligations | 0 | 0 | $ 0 |  |
Government Grants, Credit to Profit (Loss) | 0 | 0 | 0 |  |
Revenue, Net | 0 | $ 0 | 0 |  |
UNITED STATES |  |  |  |  |
Assets | 4,594,000 |  |  |  |
CHINA |  |  |  |  |
Assets | $ 368,000 |  |  |  |
Wanchun Pharma [Member] |  |  |  |  |
Government Grants, Current |  |  | $ 323,000 |  | ¥ 2
Assets |  |  |  | $ 1,347,000 |

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