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Note 20 - Net Earnings Per Common Share - Reconciliation of the Denominator Used to Calculate Earnings Per Common Share (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Net earnings attributable to Company | $ 49,074 | $ 102,903
Adjusted numerator under the If-Converted Method | $ 49,074 | $ 102,903
Shares issued and outstanding at beginning of period (in shares) | 39,845,211 | 39,213,136
Issued during the period (in shares) | 140,657 | 336,426
Weighted average number of shares used in computing basic earnings per share (in shares) | 39,985,868 | 39,549,562
Assumed exercise of stock options acquired under the Treasury Stock Method (in shares) | 193,296 | 431,456
Number of shares used in computing diluted earnings per share (in shares) | 40,179,164 | 39,981,018

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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent, and includes adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions. + References No definition available. + Details
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