Note 5 - Amounts Receivable - Amounts Receivable (Details) - USD ($) $ in Thousands |
Mar. 31, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Research and development incentives | $ 796 | $ 622 |
| Sales-based taxes receivable | 86 | 134 |
| Other | 47 | 24 |
| Total amounts receivable | $ 929 | $ 780 |
| X | ||||||||||
- Definition The amount of research and development incentives receivable. No definition available.
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| X | ||||||||||
- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount due from parties in nontrade transactions, classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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