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Equity - Common Stock (Details) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Shares authorized (in shares)	800,000	800,000
Shares outstanding at end of period (in shares)	490,290	490,359
Shares held in treasury (in shares)	1,319	1,219

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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