Accounting for Stock-based Compensation - Outstanding Stock Option Activity (Details) - Employee Stock Option - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Outstanding Beginning Balance	10,885	29,692	38,227
Number of Shares, Exercised	(8,254)	(18,807)	(8,535)
Number of Shares, Granted		0	0	0
Number of Shares, Outstanding Ending Balance	2,631	10,885	29,692	38,227
Number of Shares, Vested plus expected to vest at December 31, 2022	2,631
Number of Shares, Exercisable at December 31, 2022	2,631
Weighted Average Exercise Price, Outstanding Beginning Balance	$ 35.49	$ 33.30	$ 31.93
Weighted Average Exercise Price, Exercised	33.84	32.04	27.17
Weighted Average Exercise Price, Outstanding Ending Balance	40.68	$ 35.49	$ 33.30	$ 31.93
Weighted Average Exercise Price, Vested plus expected to vest at December 31, 2022	40.68
Weighted Average Exercise Price, Exercisable at December 31, 2022	$ 40.68
Aggregate Intrinsic Value, Outstanding at December 31, 2022	$ 246
Aggregate Intrinsic Value, Vested plus expected to vest at December 31, 2022	246
Aggregate Intrinsic Value, Exercisable at December 31, 2022	$ 246