v3.19.3

Note 10 - Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
|  | As of December 31,
|  | 2017 |  | 2018
Net operating loss carry forward |  | $ | 6,158 |  | $ | 7,051
Research and development credits |  |  | 1,284 |  |  | 1,601
Accruals and reserves |  |  | 99 |  |  | 142
Fixed assets |  |  | — |  |  | 1
Total deferred tax asset |  |  | 7,541 |  |  | 8,795
Valuation allowance |  |  | (7,541) |  |  | (8,795)
Net deferred tax asset |  | $ | — |  | $ | —
Summary of Income Tax Contingencies [Table Text Block] |
|  | Years Ended
|  | December 31,
|  | 2018
Balance at December 31, 2017 |  | $ | 331
Changes related to prior year positions |  |  | 330
Increases related to current year positions |  |  | 42
Balance at December 31, 2018 |  | $ | 703

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- Definition Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32840-109319 + Details
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