Earnings Per Share (Schedule of Earnings Per Share, Basic and Diluted) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Numerator
Net income	$ 83,020	$ 83,150	$ 231,075	$ 167,906
Denominator
Weighted average common shares outstanding - basic	31,336,756	31,962,884	31,596,995	31,967,672
Dilutive effect of stock-based compensation awards	688,259	274,138	520,922	233,005
Weighted average common shares outstanding - diluted	32,025,015	32,237,022	32,117,917	32,200,677
Earnings per share:
Basic	$ 2.65	$ 2.60	$ 7.31	$ 5.25
Diluted	$ 2.59	$ 2.58	$ 7.19	$ 5.21