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Consolidated Statements of Stockholders' Equity (USD $) In Thousands, unless otherwise specified | Total | Common Stock | Paid-in Capital | Retained Earnings | Accumulated Other Comprehensive Income (loss) | Treasury Stock
--- | --- | --- | --- | --- | --- | ---
Balance, Beginning of period at Sep. 30, 2011 | $ 1,906,533 | $ 129,854 | $ 1,582,843 | $ 376,712 | $ 85,789 | $ (268,665)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 138,183 |  |  | 138,183 |  |
Other comprehensive income adjustment | (72,483) |  |  |  | (72,483) |
Dividends paid and accrued on common stock | (34,115) |  |  | (34,115) |  |
Compensation expense related to common stock options | 848 |  | 848 |  |  |
Proceeds from exercise of common stock options | 357 | 29 | 328 |  |  |
Restricted stock | 2,343 | 67 | 2,276 |  |  |
Treasury stock | (41,914) |  |  |  |  | (41,914)
Balance, End of period at Sep. 30, 2012 | 1,899,752 | 129,950 | 1,586,295 | 480,780 | 13,306 | (310,579)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 151,505 |  |  | 151,505 |  |
Other comprehensive income adjustment | (6,928) |  |  |  | (6,928) |
Dividends paid and accrued on common stock | (37,835) |  |  | (37,835) |  |
Compensation expense related to common stock options | 473 |  | 473 |  |  |
Proceeds from exercise of common stock options | 4,260 | 208 | 4,052 |  |  |
Proceeds from issuance of common stock | 33,493 | 1,997 | 31,496 |  |  |
Tax benefit related to exercise of stock options | 1 |  | 1 |  |  |
Restricted stock | 3,152 | 418 | 2,734 |  |  |
Treasury stock | (110,238) |  |  |  |  | (110,238)
Balance, End of period at Sep. 30, 2013 | 1,937,635 | 132,573 | 1,625,051 | 594,450 | 6,378 | (420,817)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 157,364 |  |  | 157,364 |  |
Other comprehensive income adjustment | 14,330 |  |  |  | 14,330 |
Dividends paid and accrued on common stock | (45,665) |  |  | (45,665) |  |
Compensation expense related to common stock options | 324 |  | 324 |  |  |
Proceeds from exercise of common stock options | 10,142 | 501 | 9,641 |  |  |
Restricted stock | 3,444 | 249 | 3,195 |  |  |
Treasury stock | (104,291) |  |  |  |  | (104,291)
Balance, End of period at Sep. 30, 2014 | $ 1,973,283 | $ 133,323 | $ 1,638,211 | $ 706,149 | $ 20,708 | $ (525,108)

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