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Business Combination, Goodwill and Other Intangible Assets - ProForma Information (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended | 21 Months Ended
--- | --- | --- | ---
Feb. 24, 2018 | Feb. 25, 2017 | Nov. 26, 2016 | Feb. 24, 2018 | Feb. 25, 2017 | Feb. 24, 2018
Business Acquisition [Line Items] |  |  |  |  |  |
Postretirement health care benefit income, net of tax |  |  |  |  | $ 16,300 |
Acquisition related costs | $ 0 | $ 463 |  | $ 50 | 5,925 |
Grand Design [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Revenue since acquisition |  |  |  | 450,708 | 169,421 |
Operating income since acquisition |  |  |  | 55,254 | 6,759 |
Pro forma net revenues |  |  |  | 918,380 | 711,485 |
Pro forma net income |  |  |  | $ 40,155 | $ 41,153 |
Pro forma income per share - basic (in dollars per share) |  |  |  | $ 1.27 | $ 1.30 |
Pro forma income per share - diluted (in dollars per share) |  |  |  | $ 1.26 | $ 1.30 |
Acquisition related costs |  |  |  |  |  | $ 6,900
Amortization of intangibles (1 year or less useful life) [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Nonrecurring adjustments |  |  |  | $ (122) | $ (10,376) |
Increase in amortization of intangibles [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Nonrecurring adjustments |  |  |  | 0 | 1,551 |
Expenses Related to Business Combination [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Nonrecurring adjustments |  |  |  | (50) | (5,982) |
Grand Design Expenses Related to Business Combination [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Nonrecurring adjustments |  |  | $ (100) |  |  |
Interest to reflect new debt structure [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Nonrecurring adjustments |  |  |  | 0 | 3,672 |
Taxes related to the adjustments to the pro forma [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Nonrecurring adjustments |  |  |  | $ 64 | $ 8,303 |

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