XML 81 R66.htm IDEA: XBRL DOCUMENT v3.8.0.1
Difference between Provision for Income Taxes and Amount Computed by Applying Federal Statutory Rates (Detail)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Schedule of Effective Tax Rate Reconciliation [Line Items]      
Provision for federal income taxes at the statutory rate 35.00% 35.00% 35.00%
State and local income taxes, net of Federal income tax benefit 5.90% 3.60% 5.30%
Foreign rate differences 8.00% (7.90%) (8.60%)
Non-deductible expenses 3.70% 3.40% 5.50%
Tax Act- revaluation of net deferred tax assets 27.70%    
Tax Act- transition tax 3.10%    
Other 0.40% (2.10%) (1.00%)
Provision for income taxes 83.80% 32.00% 36.20%