Income Taxes - Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Federal statutory income tax rate	21.00%	21.00%	35.00%
Effect of law and rate changes	0.40%	1.90%	(68.90%)
Change in valuation allowance	(1.80%)	(1.60%)	(11.40%)
State taxes, net of federal benefit	5.10%	4.80%	4.80%
Equity-based compensation	(0.60%)	(0.60%)	(2.40%)
Puerto Rico taxes, net of federal benefit	0.30%	2.40%	(1.50%)
Permanent differences	1.20%	1.30%	0.50%
Federal tax credits, net of reserves	(0.80%)	(2.90%)	0.30%
Other, net	(0.10%)	0.00%	0.10%
Effective income tax rate	24.70%	26.30%	(43.50%)