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Note 6. Net Income Per Share (Details) - Summary of Earnings Per Share Diluted Two Class Method (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
May 25, 2013 | May 26, 2012 | May 25, 2013 | May 26, 2012
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] |  |  |  |
As reported - Basic (in Shares) | 19,999 | 19,936 | 19,982 | 19,907
Add: Undistributed earnings allocated to unvested participating shares | $ 426 | $ 478 | $ 1,415 | $ 1,279
Less: Undistributed earnings reallocated to unvested participating shares | (404) | (453) | (1,341) | (1,214)
Common Class A [Member] |  |  |  |
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] |  |  |  |
As reported - Basic | 22,638 | 21,587 | 67,793 | 56,926
As reported - Basic (in Shares) | 14,993 | 14,905 | 14,960 | 14,872
As reported - Basic (in Dollars per share) | $ 1.51 | $ 1.45 | $ 4.53 | $ 3.83
Effect of dilutive potential common shares (in Shares) | 152 | 97 | 135 | 86
Diluted EPS – Common Stock | 28,307 | 26,993 | 84,747 | 71,205
Diluted EPS – Common Stock (in Shares) | 19,820 | 19,646 | 19,751 | 19,600
Diluted EPS – Common Stock (in Dollars per share) | $ 1.43 | $ 1.37 | $ 4.29 | $ 3.63
Common Class B [Member] |  |  |  |
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] |  |  |  |
As reported - Basic | 5,647 | 5,381 | 16,880 | 14,214
As reported - Basic (in Shares) | 4,675 | 4,644 | 4,656 | 4,642
As reported - Basic (in Dollars per share) | $ 1.21 | $ 1.16 | $ 3.63 | $ 3.06
Effect of dilutive potential common shares | $ 5,647 | $ 5,381 | $ 16,880 | $ 14,214
Effect of dilutive potential common shares (in Shares) | 4,675 | 4,644 | 4,656 | 4,642

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