Income Taxes - Provision for Income Taxes (Details)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Tax provision at U.S. federal statutory rates	21.00%	21.00%	21.00%
State income taxes net of federal benefit	11.60%	12.10%	12.90%
Non-deductible permanent items	2.50%	0.90%	4.00%
Variable interest entities	(2.10%)	(1.10%)	(1.30%)
Stock-based compensation	2.80%	(0.30%)	(1.00%)
Change in valuation allowance	(2.60%)	4.40%	0.00%
Gain on sale of investment	8.50%	1.20%	(2.10%)
NOL adjustment	0.20%	0.50%	(0.10%)
Undistributed dividend	(11.50%)	7.20%	8.00%
Spin-off transaction	3.00%	0.00%	0.00%
Other	2.10%	1.20%	(0.30%)
Effective income tax rate	35.50%	47.10%	41.10%