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SCHEDULE II — VALUATION AND QUALIFYING ACCOUNTS AND RESERVES (Details) - USD ($)
$ in Thousands
 12 Months Ended
Aug. 31, 2018
Aug. 31, 2017
Aug. 31, 2016
Allowance for doubtful accounts      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period $ 4,146 [1] $ 6,427 $ 9,033
Additions, Charged to Cost and Expense 2,645 7,108 6,878
Additions, Charged to Other Accounts [2] (165) 1,074 1,007
Deductions, Charged to Cost and Expense (136) (1,059) 0
Deductions, Charged to Other Accounts [3] (2,001) (4,885) (10,491)
Balance at End of Period 4,489 4,146 [1] 6,427
Deferred tax valuation allowance      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period 273,991 153,011 79,965
Additions, Charged to Cost and Expense 31,471 127,660 74,114
Additions, Charged to Other Accounts
Deductions, Charged to Cost and Expense (36,908) (6,680) (1,068)
Deductions, Charged to Other Accounts
Balance at End of Period 268,554 273,991 $ 153,011
Before Reclassification | Allowance for doubtful accounts      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period $ 8,665    
Balance at End of Period   $ 8,665  
[1] The balance at end of the period for the year ended August 31, 2017 differs from the balance at the beginning of the period for the year ended August 31, 2018 due to the reclassification of certain trade receivables, including any related allowance for doubtful accounts, related to discontinued operations, which have been reclassified as assets held for sale on the consolidated balance sheets.
[2] Recoveries and translation adjustments.
[3] Uncollectable accounts charged to the allowance. For the years ended August 31, 2018, 2017 and 2016, $166, $(1,841) and $(1,401) were reclassified to the fair value of the deferred purchase price under our sale of accounts receivables program, respectively.