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Business Combination, Goodwill and Other Intangible Assets - ProForma Information (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 18 Months Ended
--- | --- | ---
Nov. 25, 2017 | Nov. 26, 2016 | Nov. 25, 2017
Business Acquisition [Line Items] |  |  |
Postretirement health care benefit income, net of tax |  | $ 8,400 |
Acquisition related costs | $ 50 | 5,462 |
Grand Design [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Revenue since acquisition | 221,229 | 25,836 |
Operating income since acquisition | 26,507 | 760 |
Pro forma net revenues | 450,021 | 340,975 |
Pro forma net income | $ 18,066 | $ 20,269 |
Pro forma income per share - basic (in dollars per share) | $ 0.57 | $ 0.64 |
Pro forma income per share - diluted (in dollars per share) | $ 0.57 | $ 0.64 |
Acquisition related costs |  |  | $ 6,900
Amortization of intangibles (1 year or less useful life) [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Nonrecurring adjustments | $ (122) | $ (1,941) |
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) | (5,519) |
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 | $ 5,011 |

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