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Consolidated Statements of Changes in Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands | Total | Common Shares | Additional Paid-In Capital | Retained Earnings | Accumulated Other Comprehensive Income (Loss) | Treasury Stock
--- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Aug. 31, 2019 |  | 51,776 |  |  |  | 20,262
Beginning balance at Aug. 31, 2019 | $ 632,212 | $ 25,888 | $ 91,185 | $ 866,886 | $ (491) | $ (351,256)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Stock-based compensation | 3,332 |  | 3,309 |  |  | $ 23
Stock-based compensation, net of forfeitures (in shares) |  |  |  |  |  | 1
Issuance of stock, net | 771 |  | (2,011) |  |  | $ 2,782
Issuance of stock, net (in shares) |  |  |  |  |  | 160
Issuance of stock for acquisition | 92,572 |  | 57,811 |  |  | $ 34,761
Issuance of stock for acquisition (in shares) |  |  |  |  |  | 2,000
Repurchase of common stock (in shares) |  |  |  |  |  | (45)
Repurchase of common stock | (1,788) |  |  |  |  | $ (1,788)
Common stock dividends paid | (10,958) |  |  | (10,958) |  |
Actuarial loss, net of tax | 24 |  |  |  | 24 |
Interest rate swap activity, net of tax | (500) |  |  |  | (500) |
Equity component of convertible senior notes and offering costs, net of tax of $20,840 | 61,335 |  | 61,335 |  |  |
Convertible note hedge purchase, net of tax of $17,417 | (53,383) |  | (53,383) |  |  |
Warrant transactions | 42,210 |  | 42,210 |  |  |
Net income (loss) | 18,983 |  |  |  |  |
Ending balance (in shares) at May. 30, 2020 |  | 51,776 |  |  |  | 18,146
Ending balance at May. 30, 2020 | 784,810 | $ 25,888 | 200,456 | 874,911 | (967) | $ (315,478)
Beginning balance (in shares) at Feb. 29, 2020 |  | 51,776 |  |  |  | 18,153
Beginning balance at Feb. 29, 2020 | 801,524 | $ 25,888 | 200,751 | 890,994 | (543) | $ (315,566)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Stock-based compensation | (308) |  | (315) |  |  | $ 7
Stock-based compensation, net of forfeitures (in shares) |  |  |  |  |  | 0
Issuance of stock, net | 153 |  | 20 |  |  | $ 133
Issuance of stock, net (in shares) |  |  |  |  |  | 8
Repurchase of common stock (in shares) |  |  |  |  |  | (1)
Repurchase of common stock | (52) |  |  |  |  | $ (52)
Common stock dividends paid | (3,730) |  |  | (3,730) |  |
Actuarial loss, net of tax | 8 |  |  |  | 8 |
Interest rate swap activity, net of tax | (432) |  |  |  | (432) |
Net income (loss) | (12,353) |  |  | (12,353) |  |
Ending balance (in shares) at May. 30, 2020 |  | 51,776 |  |  |  | 18,146
Ending balance at May. 30, 2020 | $ 784,810 | $ 25,888 | 200,456 | 874,911 | (967) | $ (315,478)
Beginning balance (in shares) at Aug. 29, 2020 | 51,776 | 51,776 |  |  |  | 18,133
Beginning balance at Aug. 29, 2020 | $ 827,466 | $ 25,888 | 203,791 | 913,610 | (526) | $ (315,297)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Stock-based compensation | 11,719 |  | 11,701 |  |  | $ 18
Stock-based compensation, net of forfeitures (in shares) |  |  |  |  |  | 1
Issuance of stock, net | 1,599 |  | (1,032) |  |  | $ 2,631
Issuance of stock, net (in shares) |  |  |  |  |  | 149
Repurchase of common stock (in shares) |  |  |  |  |  | (242)
Repurchase of common stock | (12,109) |  |  |  |  | $ (12,109)
Common stock dividends paid | (12,136) |  |  | (12,136) |  |
Common stock dividends accrued | (4,093) |  |  | (4,093) |  |
Actuarial loss, net of tax | 26 |  |  |  | 26 |
Net income (loss) | $ 197,786 |  |  | 197,786 |  |
Ending balance (in shares) at May. 29, 2021 | 51,776 | 51,776 |  |  |  | 18,225
Ending balance at May. 29, 2021 | $ 1,010,258 | $ 25,888 | 214,460 | 1,095,167 | (500) | $ (324,757)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Common stock dividends accrued (in dollars per share) | $ 0.12 |  |  |  |  |
Beginning balance (in shares) at Feb. 27, 2021 |  | 51,776 |  |  |  | 18,225
Beginning balance at Feb. 27, 2021 | $ 942,364 | $ 25,888 | 209,727 | 1,032,020 | (509) | $ (324,762)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Stock-based compensation | 4,738 |  | 4,733 |  |  | $ 5
Stock-based compensation, net of forfeitures (in shares) |  |  |  |  |  | 0
Common stock dividends paid | (4,062) |  |  | (4,062) |  |
Common stock dividends accrued | (4,086) |  |  | (4,086) |  |
Actuarial loss, net of tax | 9 |  |  |  | 9 |
Net income (loss) | $ 71,295 |  |  | 71,295 |  |
Ending balance (in shares) at May. 29, 2021 | 51,776 | 51,776 |  |  |  | 18,225
Ending balance at May. 29, 2021 | $ 1,010,258 | $ 25,888 | $ 214,460 | $ 1,095,167 | $ (500) | $ (324,757)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Common stock dividends accrued (in dollars per share) | $ 0.12 |  |  |  |  |

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