Amount of increase in cash dividend rate.

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Date the declared dividend will be paid, in CCYY-MM-DD format.

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Equity impact of aggregate cash, stock, and paid-in-kind dividends declared for common shareholders during the period.

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The per share amount of a dividend declared, but not paid, as of the financial reporting date.

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Date the dividend to be paid was declared, in CCYY-MM-DD format.

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Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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Number of shares that have been repurchased and retired during the period.

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Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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Stock Dividends (Details) (USD $)	3 Months Ended	9 Months Ended
Stock Dividends (Details) (USD $)	Sep. 30, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012
Stock Dividends [Abstract]
Shares repurchased		1,971,829
Value of shares repurchased		$ 33,717,000
Common stock issued under stock compensation plan, shares		656,057
Increase in cash dividend rate				$ 0.01
Cash dividend rate	$ 0.13	$ 0.13	$ 0.13	$ 0.13
Common stock cash dividends	$ 18,558,000
Dividends declared, date		Aug. 21, 2012
Dividends paid, date		Oct. 19, 2012