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Note 13 - Equity Incentive Plan - Stock Options and SAR's Activity (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 $ / shares | Dec. 31, 2017 $ / shares
Options and SARs outstanding | 1,327,200 |
Options and SAR's outstanding, Weighted Average Exercise Price Per Share (in dollars per share) | $ 42.06 | $ 33.70
Options and SAR's Granted | 199,970 |
Options and SAR's Granted, Weighted Average Exercise Price Per Share (in dollars per share) | $ 58.11 |
Options and SAR's Cancelled | (104,629) |
Options and SAR's Cancelled, Weighted Average Exercise Price Per Share (in dollars per share) | $ 50.19 |
Options and SAR's Expired | (1,079) |
Options and SAR's Expired, Weighted Average Exercise Price Per Share (in dollars per share) | $ 46.49 |
Options and SAR's Exercised | (284,548) |
Options and SAR's Exercised, Weighted Average Exercise Price Per Share (in dollars per share) | $ 10.14 |
Options and SARs outstanding | 1,136,914 |

X
- Definition Represents share-based compensation arrangement by share-based payment award options and stock appreciation rights weighted average exercise price. + References No definition available. + Details
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- Definition Number of share options and stock appreciation rights exercised during the current period. + References No definition available. + Details
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- Definition Weighted average price at which option and stock appreciation rights holders acquired shares when converting their stock options and stock appreciation rights into shares. + References No definition available. + Details
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- Definition Number of options and stock appreciation rights or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. + References No definition available. + Details
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- Definition Weighted average price at which grantees could have acquired the underlying shares with respect to stock options and stock appreciation rights of the plan that expired. + References No definition available. + Details
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X
- Definition The number of shares under options and stock appreciation rights that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the plan. + References No definition available. + Details
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- Definition Weighted average price at which grantees could have acquired the underlying shares with respect to stock options and stock appreciation rights that were terminated. + References No definition available. + Details
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- Definition Net number of share options and stock appreciation rights granted during the period. + References No definition available. + Details
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- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options and stock appreciation rights. + References No definition available. + Details
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- Definition Number of share-based compensation arrangement by share-based payment award options and stock appreciation rights outstanding. + References No definition available. + Details
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