Accounting Policies - Summary of Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Basic earnings per share
Net income	$ 23,821	$ 23,071	$ 72,243	$ 65,666
Weighted average common shares outstanding (in shares)	43,573,370	43,810,729	43,567,028	43,893,194
Basic earnings per share (in USD per share)	$ 0.55	$ 0.53	$ 1.66	$ 1.50
Diluted earnings per share
Net income	$ 23,821	$ 23,071	$ 72,243	$ 65,666
Weighted average common shares outstanding (in shares)	43,573,370	43,810,729	43,567,028	43,893,194
Effect of dilutive securities:
Weighted average common shares outstanding (in shares)	43,703,793	43,958,870	43,699,035	44,047,043
Diluted earnings per share (in USD per share)	$ 0.55	$ 0.52	$ 1.65	$ 1.49
Restricted stock
Effect of dilutive securities:
Effect of dilutive securities (in shares)	92,405	99,666	92,718	102,446
Stock options
Effect of dilutive securities:
Effect of dilutive securities (in shares)	38,018	48,475	39,289	51,403