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Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands | Total | Common Shares [Member] | Additional Paid-In Capital (APIC) [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income [Member] | Treasury Stock [Member]
--- | --- | --- | --- | --- | --- | ---
Beginning balance at Aug. 25, 2012 | $ 144,691 | $ 25,888 | $ 28,496 | $ 477,490 | $ (3,686) | $ (383,497)
Beginning balance (in shares) at Aug. 25, 2012 |  | 51,776,000 |  |  |  | (23,122,000)
Stock option exercises | $ 75 |  | 9 |  |  | $ 66
Stock option exercises (in shares) | 4,000 |  |  |  |  | 4,000
Creation/utilization of APIC pool due to stock award | $ 86 |  | 86 |  |  |
Issuance of restricted stock | 438 |  | (729) |  |  | $ 1,167
Issuance of restricted stock (in shares) |  |  |  |  |  | 71,000
Vesting of directors' stock units | 158 |  | 158 |  |  |
Stock-based compensation, net of forfeitures | 1,511 |  | 1,314 |  |  | $ 197
Stock-based compensation, net of forfeitures (in shares) |  |  |  |  |  | 12,000
Payments for the purchase of common stock | (12,718) |  |  |  |  | $ (12,718)
Payments for the purchase of common stock (in shares) |  |  |  |  |  | (882,000)
Prior service cost and actuarial loss, net of tax | 1,650 |  |  |  | 1,650 |
Plan amendment, net of tax | 2,676 |  |  |  | 2,676 |
Unrealized appreciation of investments, net of tax | 209 |  |  |  | 209 |
Net income | 31,953 |  |  | 31,953 |  |
Ending balance at Aug. 31, 2013 | 170,729 | $ 25,888 | 29,334 | 509,443 | 849 | $ (394,785)
Ending balance (in shares) at Aug. 31, 2013 |  | 51,776,000 |  |  |  | (23,917,000)
Stock option exercises | $ 2,057 |  | 771 |  |  | $ 1,286
Stock option exercises (in shares) | 77,833 |  |  |  |  | 78,000
Creation/utilization of APIC pool due to stock award | $ 441 |  | 441 |  |  |
Issuance of restricted stock | 1,500 |  | (779) |  |  | $ 2,279
Issuance of restricted stock (in shares) |  |  |  |  |  | 137,000
Stock-based compensation, net of forfeitures | 1,965 |  | 1,905 |  |  | $ 60
Stock-based compensation, net of forfeitures (in shares) |  |  |  |  |  | 3,000
Payments for the purchase of common stock | (26,340) |  |  |  |  | $ (26,340)
Payments for the purchase of common stock (in shares) |  |  |  |  |  | (1,028,000)
Prior service cost and actuarial loss, net of tax | (5,024) |  |  |  | (5,024) |
Plan amendment, net of tax | 2,216 |  |  |  | 2,216 |
Unrealized appreciation of investments, net of tax | 151 |  |  |  | 151 |
Net income | 45,053 |  |  | 45,053 |  |
Ending balance at Aug. 30, 2014 | $ 192,748 | $ 25,888 | 31,672 | 554,496 | (1,808) | $ (417,500)
Ending balance (in shares) at Aug. 30, 2014 |  | 51,776,000 |  |  |  | (24,727,000)
Stock option exercises (in shares) | 0 |  |  |  |  |
Creation/utilization of APIC pool due to stock award | $ 124 |  | 124 |  |  |
Issuance of restricted stock | 1,410 |  | (1,950) |  |  | $ 3,360
Issuance of restricted stock (in shares) |  |  |  |  |  | 199,000
Stock-based compensation, net of forfeitures | 2,221 |  | 2,172 |  |  | $ 49
Stock-based compensation, net of forfeitures (in shares) |  |  |  |  |  | 3,000
Payments for the purchase of common stock | (6,519) |  |  |  |  | $ (6,519)
Cash dividends paid and accrued on common stock | (9,765) |  |  | (9,765) |  |
Payments for the purchase of common stock (in shares) |  |  |  |  |  | (300,000)
Prior service cost and actuarial loss, net of tax | (2,917) |  |  |  | (2,917) |
Plan amendment, net of tax | 2,451 |  |  |  | 2,451 |
Net income | 41,210 |  |  | 41,210 |  |
Ending balance at Aug. 29, 2015 | $ 220,963 | $ 25,888 | $ 32,018 | $ 585,941 | $ (2,274) | $ (420,610)
Ending balance (in shares) at Aug. 29, 2015 |  | 51,776,000 |  |  |  | (24,825,000)

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