Accounting for Stock-based Compensation - Restricted Stock Unit Activity (Details) - Restricted Stock Units (RSUs) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended			24 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Non-vested Beginning Balance	303,836	305,399	449,975	449,975
Number of Shares, Granted	148,361	132,757	170,411
Number of Shares, Vested	(140,666)	(119,203)	(258,307)
Number of Shares, Cancelled	(26,705)	(15,117)	(56,680)
Number of Shares, Non-vested Ending Balance	284,826	303,836	305,399	303,836
Number of Shares, expected to vest in the future	250,604
Weighted-Average Grant Date Fair Value, Non-vested Beginning Balance	$ 79.17	$ 66.51	$ 62.48	$ 62.48
Weighted-Average Grant Date Fair Value, Granted	93.70	95.68	58.27
Weighted-Average Grant Date Fair Value, Vested	76.53	66.46	54.73
Weighted-Average Grant Date Fair Value, Cancelled	77.16	68.53	63.46
Weighted-Average Grant Date Fair Value, Non-vested Ending Balance	88.23	$ 79.17	$ 66.51	$ 79.17
Weighted-Average Grant Date Fair Value, expected to vest in the future	$ 87.50
Aggregate Intrinsic Value, Non-vested	$ 28,212,015
Aggregate Intrinsic Value, expected to vest in the future	$ 24,822,356