Stock Plans - Option activity (Details) - USD ($) $ / shares in Units, $ in Thousands |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2020 |
Dec. 31, 2019 |
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| Stock Plans | ||
| Number of options outstanding at Beginning of year | 1,192,000 | |
| Shares, Granted | 50,000 | |
| Shares, Forfeited or expired | (324,000) | |
| Number of Options and Awards outstanding at end of year | 918,000 | 1,192,000 |
| Shares, Exercisable at end of year | 824,000 | |
| Weighted Average Exercise Price, Outstanding at Beginning of year | $ 6.23 | |
| Weighted Average Exercise Price, Granted | 0.28 | |
| Weighted Average Exercise Price,Forfeited or expired | 1.88 | |
| Weighted Average Exercise Price, Outstanding at End of year | 7.44 | $ 6.23 |
| Weighted Average Exercise Price, Exercisable at end of year | $ 8.19 | |
| Weighted Average Remaining Contractual Term, Outstanding (Years) | 7 years | 7 years 10 months 24 days |
| Weighted Average Remaining Contractual Term, Exercisable at end of year | 6 years 9 months 18 days | |
| Aggregate Intrinsic Value, Outstanding at End of year | $ 1 |
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- References No definition available.
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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Weighted average price of options that were either forfeited or expired. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Gross number of share options (or share units) granted during the period. No definition available.
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. No definition available.
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- Definition Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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