Computation of Net Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Computation of Net Earnings per Share
Net income available to common stockholders	$ 50,866	$ 51,595	$ 61,579	$ 47,697	$ 102,460	$ 109,276
Weighted average shares of common stock outstanding used in computing basic income per share	32,598		32,775		32,618	32,759
Incremental options and RSUs	173		414		230	478
Weighted average shares of common stock used in computing diluted net income per share	32,771		33,189		32,848	33,237
Net income per share
Basic	$ 1.56		$ 1.88		$ 3.14	$ 3.34
Diluted	$ 1.55		$ 1.86		$ 3.12	$ 3.29
Anti-dilutive common equivalent shares excluded from calculation	22,983		770		20,639	387