EARNINGS PER COMMON SHARE
Earnings per common share is calculated as follows:  
Year Ended December 31,
($ and shares in thousands, except per share data)202520242023
Numerator:
Net income attributable to common shares $135,056 $138,401 $142,897 
Effect of interest on potentially dilutive convertible notes, net of tax— — 162 
Net income for diluted earnings per common share calculation$135,056 $138,401 $143,059 
Denominator:
Weighted average common shares outstanding - basic32,488 32,568 32,278 
Weighted average impact of potentially dilutive convertible notes1,243 644 248 
Weighted average impact of potentially dilutive warrants612 137 — 
Weighted average impact of potentially dilutive securities294 350 512 
Weighted average common shares outstanding - diluted34,637 33,699 33,038 
Earnings per common share:
Basic earnings per common share$4.16 $4.25 $4.43 
Diluted earnings per common share$3.90 $4.11 $4.33 
An immaterial amount of securities were not included in the computation of diluted earnings per common share as they are considered anti-dilutive for all periods presented.

About Earnings Per Share Disclosures

The earnings per share disclosure breaks down the calculation from net income to both basic and diluted EPS, revealing the full impact of a company's capital structure on per-share economics. The reconciliation between basic and diluted share counts exposes how many stock options, RSUs, convertible securities, and warrants are potentially dilutive to existing shareholders.

Key signals: a widening gap between basic and diluted shares indicates growing dilution from equity compensation or convertible instruments. Anti-dilutive securities excluded from the diluted calculation deserve attention — they represent latent dilution that will materialize if the stock price rises. Watch for the effect of share buybacks on per-share metrics: EPS growth driven primarily by repurchases rather than income growth signals weakening fundamentals. Compare year-over-year changes in the diluted share count against equity compensation expense to assess whether management is effectively managing dilution.