XML 71 R62.htm IDEA: XBRL DOCUMENT v3.20.2
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 212.70% 3.70% 1.80%
Excess tax benefits from stock-based compensation (60.40%) 0.70% 7.80%
Nondeductible expenses 118.70% 1.20% (5.00%)
Reserve for uncertain tax positions (13.70%) (0.10%) 4.00%
U.S. federal statutory rate change 0.00% 0.00% 14.50%
Other 12.20% (1.90%) 6.90%
Effective income tax rate 290.50% 24.60% 65.00%