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Summary of Financial Information by Reportable Segment and Product Line (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Aug. 31, 2019 | Aug. 31, 2018 | Aug. 31, 2017
Segment Reporting Information [Line Items] |  |  |
Net sales | $ 654,758 | $ 641,303 | $ 616,591
Operating profit (loss) | 47,516 | 50,206 | (84,852)
Depreciation and amortization | 20,217 | 20,405 | 22,925
Capital Expenditure | 14,923 | 11,021 | 17,238
Assets | 1,124,274 | 1,485,217 |
Assets of Continuing Operations | 838,696 | 916,284 |
Property, plant and equipment, net | 56,729 | 54,974 |
Products [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 433,703 | 439,405 | 396,381
Service & Rental [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 175,812 | 151,680 | 156,201
Industrial Tools & Services [Member] [Domain] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 609,515 | 591,085 | 552,582
Operating profit (loss) | 101,411 | 99,432 | 95,825
Depreciation and amortization | 14,762 | 15,301 | 15,025
Capital Expenditure | 9,945 | 7,799 | 8,614
Assets | 553,615 | 589,926 |
Other Operating Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 45,243 | 50,218 | 64,009
Operating profit (loss) | (11,821) | (5,690) | (130,396)
Depreciation and amortization | 3,408 | 3,122 | 5,886
Capital Expenditure | 3,917 | 1,295 | 5,411
Assets | 54,484 | 76,506 |
General Corporate |  |  |
Segment Reporting Information [Line Items] |  |  |
Operating profit (loss) | (42,076) | (43,536) | (50,281)
Depreciation and amortization | 2,047 | 1,982 | 2,014
Capital Expenditure | 1,061 | 1,927 | $ 3,213
Assets | $ 230,597 | $ 249,852 |

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