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Note 2 - Acquisitions - Proforma Results (Details) - The 2021 Acquisitions [Member] - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2021
Revenue, net | $ 138,741 | $ 252,406
Net earnings | $ 7,880 | $ 11,309
Common Class A [Member] |  |
Earnings per Class A common share - basic and diluted (in dollars per share) | $ 0.61 | $ 0.87
Common Class B [Member] |  |
Earnings per Class A common share - basic and diluted (in dollars per share) | $ 0.64 | $ 0.92

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