Note 1 - Reporting entity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | ||
|---|---|---|---|
Jul. 18, 2022 |
Mar. 31, 2023 |
Dec. 31, 2022 |
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| Notes To Financial Statements [Abstract] | |||
| Accumulated deficit | $ (478,006) | $ (464,330) | |
| Cash and investment | 35,700 | 47,000 | |
| Working capital | $ 25,500 | $ 37,200 | |
| Common stock bid price per share | $ 1.00 | ||
| Closing bid price requirement description | On January 18, 2023, we qualified for a 180-day extension to July 18, 2023. If we are unable to meet the minimum closing bid price requirement under Nasdaq Listing Rule 5810(c)(3)(A) by then, Nasdaq will provide notice that our securities will be subject to delisting. In order to regain compliance with such rule, we are considering a reverse stock split of the Company’s outstanding Common Shares at a ratio in the range of 1-for-10 to 1-for-20 (the Reverse Stock Split”). The Reverse Stock Split is conditional upon the approval of the shareholders of the Company at the annual and special meeting of shareholders to be held on May 23, 2023 and upon the approval of the Board of Directors of the Company which, if it determines to proceed with the Reverse Stock Split, will also determine its exact ratio and date. |
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- Definition Closing bid price requirement description. No definition available.
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- Definition Common shares bid price per share. No definition available.
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- References No definition available.
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- Definition Working capital. No definition available.
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- Definition Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The cumulative amount of the reporting entity's undistributed earnings or deficit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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