Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Details)

v3.7.0.1
Income Taxes - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
May 31, 2017
May 31, 2016
Feb. 29, 2016
May 31, 2017
May 31, 2016
Income Tax Disclosure Additional Details [Table] [Line Items]          
Asset Impairment Charges $ 0 $ 0 $ 186,511 $ 0 $ 186,511
Asset Impairment Charge Net of Income Tax Benefit         169,100
Earnings (loss) before income taxes 18,482 20,339   25,724 (141,242)
Income tax benefit $ (4,029) $ (827)   $ (6,827) $ (18,666)
Effective Income Tax Rate Reconciliation, Percent (21.80%) (4.10%)   (26.50%) 13.20%
Adjusted Effective Tax Rate (21.80%) (4.10%)   (26.50%) (2.80%)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent       35.00%  
Change in tax reserves $ (3,300)        
Income tax benefit related to discrete income tax adjustment   $ 2,300      
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent (26.90%) (9.50%)      
Foreign Destination [Member]          
Income Tax Disclosure Additional Details [Table] [Line Items]          
Percent of Revenue (excluding impairment charge) from foreign jurisdictions       80.00% 80.00%
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent (11.20%) (15.80%)