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Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands				1 Months Ended	3 Months Ended
	Jan. 31, 2024	Jan. 25, 2023	Jan. 31, 2022	Nov. 30, 2023	Dec. 31, 2023	Sep. 30, 2023	Dec. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of additional shares available for future grants		500,000
Total unrecognized compensation cost related to non-vested stock-based compensation arrangements					$ 27,881
Forfeiture rate, Board of Directors					0.00%
Forfeiture rate, non-Board of Directors					7.30%
Unrecognized compensation cost is expected to be recognized over a weighted-average period					1 year 7 months 6 days
Stock Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vested contractual term, in years					10 years
Vesting period, in years					4 years
Weighted-average exercise price					$ 131.66
Stock Options [Member] \| Share-based Compensation Award Tranche One [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting rate					25.00%
Restricted Stock Units (RSUs) [Member] \| Share-based Compensation Award Tranche One [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period, in years					4 years
Vesting rate					25.00%
Restricted Stock Units (RSUs) [Member] \| On or After November 14, 2023 [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period, in years					3 years
Vesting rate					33.30%
Performance Restricted Stock Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award performance period (in years)				3 years
Performance based criteria plan payout percentage, target				100.00%
Discount for dividends					0.00%
Performance Restricted Stock Units [Member] \| Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance based criteria plan payout percentage				150.00%
Performance Restricted Stock Units [Member] \| Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Performance based criteria plan payout percentage				0.00%
2022 Authorization [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock repurchase program authorized amount			$ 800,000		$ 26,369
Repurchase period in years			2 years
Stock repurchase program, number of shares authorized to be repurchased					0		274,000
2017 Authorization [Member] \| 2017 Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future grants					2,661,000	2,689,000
2024 Authorization [Member] \| Subsequent Event [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock repurchase program authorized amount	$ 600,000
Repurchase period in years	3 years