v3.26.1
Income and Dividends Per Share of Common Stock (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Income per share of common stock:            
Net Income (Loss) $ 34,510 $ 30,582 $ 30,831 $ 34,113 $ 65,092 $ 64,944
Weighted-average shares for basic income per common share (in shares) 28,686   28,637   28,679 28,630
Effect of dilutive securities:            
Employee and director stock options (in shares) 90   92   94 98
Adjusted weighted-average shares and assumed exercises for diluted income per common share (in shares) 28,776   28,729   28,773 28,728
Basic net income per common share (in dollars per share) $ 1.2   $ 1.08   $ 2.27 $ 2.27
Diluted net income per common share (in dollars per share) 1.2   1.07   2.26 2.26
Cash dividends per share of common stock (in dollars per share) $ 0.06   $ 0.06   $ 0.12 $ 0.12
Options            
Anti-dilutive securities            
Anti-dilutive shares of common stock excluded from the calculation of dilutive securities 0   2   0 1