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Condensed Consolidating Statements of Earnings (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Aug. 31, 2019 | Aug. 31, 2018 | Aug. 31, 2017
Condensed Financial Statements, Captions [Line Items] |  |  |
Net sales | $ 654,758 | $ 641,303 | $ 616,591
Cost of products sold | 362,106 | 358,019 | 356,221
Gross profit | 292,652 | 283,284 | 260,370
Selling, administrative and engineering expenses | 209,231 | 210,256 | 208,128
Amortization of intangible assets | 8,922 | 9,280 | 9,097
Director & officer transition charges | 0 | 0 | 7,784
Restructuring charges | 4,156 | 10,555 | 3,234
Impairment and divestiture charges | 22,827 | 2,987 |
Asset Impairment Charges |  |  | 116,979
Operating profit (loss) | 47,516 | 50,206 | (84,852)
Financing costs, net | 28,163 | 30,872 | 29,221
Intercompany expense (income), net | 0 | 0 | 0
Intercompany Dividends | 0 | 0 | 0
Other expense (income), net | 629 | 138 | 3,816
Earnings (loss) before income tax expense (benefit) | 18,724 | 19,196 | (117,889)
Income Tax Expense (Benefit) | 10,657 | 14,450 | (22,614)
Net Earnings (Loss) from Continuing Operations | 8,067 | 4,746 | (95,275)
Net (Loss) Earnings from Discontinued Operations | (257,212) | (26,394) | 29,062
Earnings (loss) Before Equity In (Loss) Earnings Of Subsidiaries | (249,145) | (21,648) | (66,213)
Equity in earnings (loss) of subsidiaries | 0 | 0 | 0
Net (loss) earnings | (249,145) | (21,648) | (66,213)
Comprehensive income (loss) | (246,572) | 31,368 | (41,651)
Parent |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Net sales | 167,009 | 159,411 | 145,222
Cost of products sold | 46,220 | 29,811 | 35,244
Gross profit | 120,789 | 129,600 | 109,978
Selling, administrative and engineering expenses | 85,399 | 81,028 | 76,816
Amortization of intangible assets | 1,272 | 1,272 | 1,272
Director & officer transition charges |  |  | 7,784
Restructuring charges | 562 | 6,109 | 634
Impairment and divestiture charges | 0 | 4,217 |
Asset Impairment Charges |  |  | 0
Operating profit (loss) | 33,556 | 36,974 | 23,472
Financing costs, net | 28,716 | 31,752 | 30,005
Intercompany expense (income), net | (15,020) | (17,087) | (23,302)
Intercompany Dividends | (447,637) | 0 | 0
Other expense (income), net | (435) | (826) | 3,303
Earnings (loss) before income tax expense (benefit) | 467,932 | 23,135 | 13,466
Income Tax Expense (Benefit) | (5,113) | (35,134) | (4,623)
Net Earnings (Loss) from Continuing Operations | 473,045 | 58,269 | 18,089
Net (Loss) Earnings from Discontinued Operations | (3,148) | (5,951) | (6,362)
Earnings (loss) Before Equity In (Loss) Earnings Of Subsidiaries | 469,897 | 52,318 | 11,727
Equity in earnings (loss) of subsidiaries | (719,042) | (73,966) | (77,940)
Net (loss) earnings | (249,145) | (21,648) | (66,213)
Comprehensive income (loss) | (246,572) | 31,368 | (41,651)
Guarantors |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Net sales | 70,621 | 65,128 | 74,008
Cost of products sold | 44,007 | 41,674 | 45,994
Gross profit | 26,614 | 23,454 | 28,014
Selling, administrative and engineering expenses | 20,095 | 22,540 | 24,958
Amortization of intangible assets | 2,600 | 2,892 | 2,892
Director & officer transition charges |  |  | 0
Restructuring charges | 1,402 | 661 | 19
Impairment and divestiture charges | 6,243 | 0 |
Asset Impairment Charges |  |  | 0
Operating profit (loss) | (3,726) | (2,639) | 145
Financing costs, net | 0 | 0 | 0
Intercompany expense (income), net | 21,573 | 16,276 | 84,562
Intercompany Dividends | (39,208) | (28,822) | (231,689)
Other expense (income), net | 1 | 18 | (26)
Earnings (loss) before income tax expense (benefit) | 13,908 | 9,889 | 147,298
Income Tax Expense (Benefit) | (2,395) | 21,689 | (18,477)
Net Earnings (Loss) from Continuing Operations | 16,303 | (11,800) | 165,775
Net (Loss) Earnings from Discontinued Operations | (93,730) | 9,342 | 9,791
Earnings (loss) Before Equity In (Loss) Earnings Of Subsidiaries | (77,427) | (2,458) | 175,566
Equity in earnings (loss) of subsidiaries | (28,354) | (54,385) | (67,668)
Net (loss) earnings | (105,781) | (56,843) | 107,898
Comprehensive income (loss) | (105,781) | (56,843) | 90,011
Non-Guarantors |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Net sales | 417,128 | 416,764 | 397,361
Cost of products sold | 271,879 | 286,534 | 274,983
Gross profit | 145,249 | 130,230 | 122,378
Selling, administrative and engineering expenses | 103,737 | 106,688 | 106,354
Amortization of intangible assets | 5,050 | 5,116 | 4,933
Director & officer transition charges |  |  | 0
Restructuring charges | 2,192 | 3,785 | 2,581
Impairment and divestiture charges | 16,584 | (1,230) |
Asset Impairment Charges |  |  | 116,979
Operating profit (loss) | 17,686 | 15,871 | (108,469)
Financing costs, net | (553) | (880) | (784)
Intercompany expense (income), net | 70,086 | (46,961) | (67,796)
Intercompany Dividends | 0 | 0 | (5,623)
Other expense (income), net | 1,063 | 946 | 539
Earnings (loss) before income tax expense (benefit) | (52,910) | 62,766 | (34,805)
Income Tax Expense (Benefit) | 18,165 | 27,895 | 486
Net Earnings (Loss) from Continuing Operations | (71,075) | 34,871 | (35,291)
Net (Loss) Earnings from Discontinued Operations | (83,695) | (77,557) | 19,097
Earnings (loss) Before Equity In (Loss) Earnings Of Subsidiaries | (154,770) | (42,686) | (16,194)
Equity in earnings (loss) of subsidiaries | 11,064 | 613 | 316
Net (loss) earnings | (143,706) | (42,073) | (15,878)
Comprehensive income (loss) | (137,292) | 9,555 | 43,818
Consolidation, Eliminations |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Net sales | 0 | 0 | 0
Cost of products sold | 0 | 0 | 0
Gross profit | 0 | 0 | 0
Selling, administrative and engineering expenses | 0 | 0 | 0
Amortization of intangible assets | 0 | 0 | 0
Director & officer transition charges |  |  | 0
Restructuring charges | 0 |  | 0
Impairment and divestiture charges | 0 | 0 |
Asset Impairment Charges |  |  | 0
Operating profit (loss) | 0 | 0 | 0
Financing costs, net | 0 | 0 | 0
Intercompany expense (income), net | (76,639) | 47,772 | 6,536
Intercompany Dividends | 486,845 | 28,822 | 237,312
Other expense (income), net | 0 | 0 | 0
Earnings (loss) before income tax expense (benefit) | (410,206) | (76,594) | (243,848)
Income Tax Expense (Benefit) | 0 | 0 | 0
Net Earnings (Loss) from Continuing Operations | (410,206) | (76,594) | (243,848)
Net (Loss) Earnings from Discontinued Operations | (76,639) | 47,772 | 6,536
Earnings (loss) Before Equity In (Loss) Earnings Of Subsidiaries | (486,845) | (28,822) | (237,312)
Equity in earnings (loss) of subsidiaries | 736,332 | 127,738 | 145,292
Net (loss) earnings | 249,487 | 98,916 | (92,020)
Comprehensive income (loss) | $ 243,073 | $ 47,288 | $ (133,829)

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