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Stock Dividends	6 Months Ended
	Jun. 30, 2012
Stock Dividends [Abstract]
Stock Dividends	The increase in common stock during the six months ended June 30, 2012, was primarily due to the issuance of 496,578 shares of the Company’s common stock under the Company’s stock-based compensation plans. The Company announced a $0.01 per share increase in its quarterly cash dividend rate during the first quarter of 2012, which resulted in a recorded cash dividend of $0.13 per share. The first quarter dividend of approximately $18,794,000 was declared on May 24, 2012 and was paid on July 20, 2012.

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Tabular disclosure of an entity's stock, including par or stated value per share, number and dollar amount of share subscriptions, shares authorized, shares issued, shares outstanding, number and dollar amount of shares held in an employee trust, dividend per share, total dividends, share conversion features, par value plus additional paid in capital, the value of treasury stock and other information necessary to a fair presentation, and EPS information. Stock by class includes common, convertible, and preferred stocks which are not redeemable or redeemable solely at the option of the issuer. Includes preferred stock with redemption features that are solely within the control of the issuer and mandatorily redeemable stock if redemption is required to occur only upon liquidation or termination of the reporting entity. If more than one issue is outstanding, state the title of each issue and the corresponding dollar amount; dollar amount of any shares subscribed but unissued and the deduction of subscriptions receivable there from; number of shares authorized, issued, and outstanding.

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