XML 92 R78.htm IDEA: XBRL DOCUMENT v3.8.0.1
Income Taxes - Statutory U.S. Federal Income Tax Rate to Company's Effective Tax Rate (Detail)
2 Months Ended 10 Months Ended 12 Months Ended
Feb. 28, 2018
Dec. 31, 2017
Feb. 28, 2018
Feb. 28, 2017
Feb. 29, 2016
Income Tax Disclosure [Abstract]          
Statutory rate 21.00% 35.00% 32.70% 35.00% 35.00%
Provision for state income taxes, net of federal income tax benefit     2.80% 3.50% 3.10%
Domestic production activities deduction     (2.80%) (2.50%) (2.50%)
Valuation allowance       (3.40%) 0.70%
Federal true-up     4.10% 0.60%  
Tax Cuts and Jobs Act     (7.60%)    
Other     1.00% 0.80% 0.50%
Total     30.20% 34.00% 36.80%