Summary of Significant Accounting Policies - Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Basic EPS, Income (Numerator)
Income available to common shareholders	$ 81,992	$ 77,652	$ 209,892	$ 176,463
Diluted EPS, Income (Numerator)
Income available to common shareholders	$ 81,992	$ 77,652	$ 209,892	$ 176,463
Basic EPS, Weighted Average Shares (Denominator)
Number of shares outstanding	45,737	45,591	45,709	45,560
Effect of Dilutive Securities, Shares (Denominator)
Stock options and restricted stock units	442	453	460	485
Diluted EPS, Weighted Average Shares (Denominator)
Number of shares outstanding	46,179	46,044	46,169	46,045
Earnings Per Share, Diluted, Other Disclosures
Anti-dilutive securities excluded from diluted EPS		118	114	118
Basic EPS, Per Share Amount
Basic net earnings per share (in dollars per share)	$ 1.79	$ 1.70	$ 4.59	$ 3.87
Diluted EPS, Per Share Amount
Diluted earnings per share (in dollars per share)	$ 1.78	$ 1.69	$ 4.55	$ 3.83