Stockholders' Equity - Number of Shares (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 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	35,593	35,760	35,593	35,760
Effect of using weighted average common shares outstanding	76	60	125	59
Shares used in computing earnings per share-basic	35,669	35,820	35,718	35,819
Effect of shares issuable under stock option plans based on the treasury stock method	30	28	30	26
Effect of restricted and contingently issuable shares	56	69	56	65
Shares used in computing earnings per share-diluted	35,755	35,917	35,804	35,910