Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Securities available-for-sale, amortized cost	$ 1,577,311	$ 1,126,867
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	91,067,423	90,871,860
Common stock, shares outstanding (in shares)	73,411,960	75,750,862
Treasury stock shares (in shares)	17,655,463	15,120,998

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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