XML 116 R62.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Income Taxes - Effective income tax reconciliation (Details)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Effective Income Tax Rate, Tax Rate Reconciliation      
Statutory rate 21.00% 21.00% 35.00%
Effect of:      
State and local income taxes, net of federal tax benefit (6.20%) 3.00% 2.20%
Excess tax benefits from stock-based compensation 2.90% 0.90% 7.10%
Nondeductible expenses (5.70%) 1.50% (4.60%)
Reserve for uncertain tax positions 0.70% (0.20%) 3.60%
U.S. federal statutory rate change 0.00% 0.00% 13.20%
Other (0.70%) (1.80%) 6.00%
Effective income tax rate 12.00% 24.40% 62.50%