Stockholders' Equity - Number of Shares (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Reconciliation of the number of shares outstanding with the number of shares used in computing basic and diluted earnings per share
Common shares outstanding, end of period	35,691	35,770	35,691	35,770
Effect of using weighted average common shares outstanding	55	52	51	47
Shares used in computing earnings per share-basic	35,746	35,822	35,742	35,817
Effect of shares issuable under stock option plans based on the treasury stock method	30	26	30	26
Effect of restricted and contingently issuable shares	52	58	56	64
Shares used in computing earnings per share-diluted	35,828	35,906	35,828	35,907