Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Details)

v3.19.1
Income Taxes - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended 14 Months Ended
Feb. 28, 2019
Feb. 28, 2018
Feb. 28, 2019
Feb. 28, 2018
Aug. 31, 2019
Aug. 31, 2018
Feb. 28, 2019
Income Tax Disclosure Additional Details [Table] [Line Items]              
Earnings (loss) before income taxes $ 8,545 $ 1,618 $ (8,980) $ 8,448      
Income tax expense $ 5,792 $ 19,839 $ 5,719 $ 21,443      
Effective Income Tax Rate Reconciliation, Percent 67.80% 1226.10% (63.70%) 253.80%      
Federal Statutory Income Tax Rate, Percent     35.00% 25.70%     21.00%
Adjusted Transition Tax Liability $ 3,000            
Impairment & divestiture charges 6,886 $ 2,987 $ 43,339 $ 2,987      
Impairment and divestiture charges, net of tax $ 6,700 $ 12,385 $ 40,524 $ 12,385      
Effective Income Tax Rate, Percent, Excluding Impairment & Divestiture Charges 38.80% 226.80% 24.80% 105.30%      
Tax (benefit) expense Related to the Tax Cuts and Jobs Act     $ 2,600 $ 7,900      
Shortfall of Tax Benefits on Deductible Equity Compensation and Expiration of Unexercised Stock Options       $ 1,500      
Percent of Revenue (excluding impairment charge) from foreign jurisdictions         70.00% 75.00%  
Effective Income Tax Rate Reconciliation, Deduction, Percent       5.20%