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Shareholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Nov. 08, 2016 | May 27, 2017 | Feb. 25, 2017 | Nov. 26, 2016 | Feb. 27, 2016 | Nov. 28, 2015 | Feb. 25, 2017 | Feb. 27, 2016
Shareholders Equity [Line Items] |  |  |  |  |  |  |  |
Stock-based compensation expense |  |  | $ 0.7 |  | $ 0.6 |  | $ 1.5 | $ 1.3
Dividends paid per common share (in dollars per share) |  |  | $ 0.10 |  | $ 0.10 |  | $ 0.20 | $ 0.20
Oct 11 2016 Grant [Member] | Management [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |
Shareholders Equity [Line Items] |  |  |  |  |  |  |  |
Issuance of stock (in shares) |  |  |  | 97,600 |  |  |  |
October 13 2015 Grant [Domain] | Management [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |
Shareholders Equity [Line Items] |  |  |  |  |  |  |  |
Issuance of stock (in shares) |  |  |  |  |  | 204,200 |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |
Shareholders Equity [Line Items] |  |  |  |  |  |  |  |
Common stock, dividends, per share, declared |  | $ 0.10 |  |  |  |  |  |
Grand Design [Member] |  |  |  |  |  |  |  |
Shareholders Equity [Line Items] |  |  |  |  |  |  |  |
Shares issued for acquisition | 4,586,555 |  |  |  |  |  |  |

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