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Earnings Per Share
 9 Months Ended
Sep. 30, 2026
Earnings Per Share [Abstract]  
Earnings Per Share Earnings Per Share
The following table shows the calculation of basic and diluted earnings per share:
Three Months Ended September 30,Nine Months Ended September 30,
(in thousands, except share data and per share amounts)202620252026
2025
Numerator:
Net income attributable to Amerant Bancorp Inc.$25,716 $14,756 $64,632 $49,716 
Net income available to common stockholders$25,716 $14,756 $64,632 $49,716 
Denominator:
Basic weighted average shares outstanding39,164,732 41,590,201 39,594,915 41,802,195 
Dilutive effect of share-based compensation awards280,052 183,900 222,655 141,051 
Diluted weighted average shares outstanding39,444,784 41,774,101 39,817,570 41,943,246 
Basic earnings per common share$0.66 $0.35 $1.63 $1.19 
Diluted earnings per common share$0.65 $0.35 $1.62 $1.19 

As of September 30, 2026, potential dilutive instruments consisted of unvested shares of restricted stock units and performance share units totaling 543,339. As of September 30, 2025, potential dilutive instruments consisted of unvested shares of restricted stock, restricted stock units and performance share units totaling 558,172. In the three and nine month periods ended September 30, 2026 and 2025, potential dilutive instruments were included in the diluted earnings per share computation because, when the unamortized deferred compensation cost related to these shares was divided by the average market price per share in those periods, fewer shares would have been purchased than restricted shares assumed issued. Therefore, in those periods, such awards resulted in higher diluted weighted average shares outstanding than basic weighted average shares outstanding, and had a dilutive effect on per share earnings. Further, as of September 30, 2026 and 2025, 50,531 and 88,829 performance share units respectively, were excluded from the diluted earnings per share computation because the performance target was not achieved, or because their inclusion would have been antidilutive. See “Note 1. Business, Basis of Presentation and Summary of Significant Accounting Policies” and “Note 14. Incentive Compensation and Benefit Plans” in the 2025 Form 10-K for more details on the performance and or market conditions associated with these awards.