Income Taxes - Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Taxes at statutory rate	21.00%	21.00%	35.00%
State taxes, net of federal benefit	5.30%	5.20%	4.40%
Foreign tax rate differential	0.30%	0.50%	(0.30%)
Tax legislation			(22.60%)
Other permanent differences	1.30%	1.80%	0.70%
Prior year tax adjustments	(1.00%)	0.20%	(0.30%)
Unrecognized tax benefits	(0.20%)	(0.60%)	0.10%
Valuation allowance	1.10%	1.30%	0.70%
Equity-based compensation	(3.60%)	(3.00%)	(2.10%)
Tax credits	(0.60%)	(0.50%)	(0.60%)
Taxes at effective rate	23.60%	25.90%	15.00%