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Other Assets - Schedule of Goodwill (Details) - USD ($) |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jul. 31, 2018 | May 31, 2017 | Aug. 31, 2018 | Aug. 31, 2017
Goodwill [Roll Forward] |  |  |  |
Balances, beginning of period |  |  | $ 138,454,000 | $ 144,284,000
Effect of foreign currency translation adjustments |  |  | 10,000 | 352,000
Impairment | $ 0 | $ (5,500,000) |  | (5,542,000)
Other |  |  | 0 | (640,000)
Balances, end of period |  |  | 138,464,000 | 138,454,000
Energy |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Balances, beginning of period |  |  | 552,000 | 552,000
Effect of foreign currency translation adjustments |  |  | 0 | 0
Impairment |  |  |  | 0
Other |  |  | 0 | 0
Balances, end of period |  |  | 552,000 | 552,000
Ag |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Balances, beginning of period |  |  | 127,328,000 | 132,786,000
Effect of foreign currency translation adjustments |  |  | 10,000 | 352,000
Impairment |  |  |  | (5,542,000)
Other |  |  | 0 | (268,000)
Balances, end of period |  |  | 127,338,000 | 127,328,000
Corporate and Other |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Balances, beginning of period |  |  | 10,574,000 | 10,946,000
Effect of foreign currency translation adjustments |  |  | 0 | 0
Impairment |  |  |  | 0
Other |  |  | 0 | (372,000)
Balances, end of period |  |  | $ 10,574,000 | 10,574,000
As Previously Reported |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Balances, beginning of period |  |  |  | 160,414,000
As Previously Reported | Energy |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Balances, beginning of period |  |  |  | 552,000
As Previously Reported | Ag |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Balances, beginning of period |  |  |  | 148,916,000
As Previously Reported | Corporate and Other |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Balances, beginning of period |  |  |  | 10,946,000
Restatement Adjustments |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Balances, beginning of period |  |  |  | (16,130,000)
Restatement Adjustments | Energy |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Balances, beginning of period |  |  |  | 0
Restatement Adjustments | Ag |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Balances, beginning of period |  |  |  | (16,130,000)
Restatement Adjustments | Corporate and Other |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Balances, beginning of period |  |  |  | $ 0

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