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Stockholders' Equity
 12 Months Ended
Dec. 31, 2012
Stockholders' Equity [Abstract]  
Stockholders' Equity

13. Stockholders’ Equity

     The following is a summary of our stockholder’s equity capital accounts as of the dates indicated:

December 31, 2012December 31, 2011
Preferred Stock, $1.00 par value:
Authorized shares 50,000,000 50,000,000
Issued shares 26,224,854 25,724,854
Outstanding shares 26,224,854 25,724,854
Common Stock, $1.00 par value:
Authorized shares 400,000,000 400,000,000
Issued shares 260,780,109 192,604,918
Outstanding shares 260,373,754 192,275,248

Preferred Stock. The following is a summary of our preferred stock activity during the periods presented (dollars in thousands, except per share amounts):

Year Ended
December 31, 2012December 31, 2011December 31, 2010
Weighted Avg.Weighted Avg.Weighted Avg.
SharesDividend RateSharesDividend RateSharesDividend Rate
Beginning balance 25,724,8547.013% 11,349,8547.663% 11,474,0937.697%
Shares issued 11,500,0006.500% 14,375,0006.500% 349,8546.000%
Shares redeemed (11,000,000)7.716% -0.000% (5,513)7.500%
Shares converted -0.000% -0.000% (468,580)7.262%
Ending balance 26,224,8546.493% 25,724,8547.013% 11,349,8547.663%

     During the three months ended December 31, 2010, we issued 349,854 shares of 6.00% Series H Cumulative Convertible and Redeemable Preferred Stock in connection with a business combination. These shares have a liquidation value of $25.00 per share. Dividends are payable quarterly in arrears. The preferred stock, which has no stated maturity, may be redeemed by us at a redemption price of $25.00 per share, plus accrued and unpaid dividends on such shares to the redemption date, on or after December 31, 2015.

     During the three months ended March 31, 2011, we issued 14,375,000 of 6.50% Series I Cumulative Convertible Perpetual Preferred Stock. These shares have a liquidation value of $50.00 per share. Dividends are payable quarterly in arrears. The preferred stock is not redeemable by us. The preferred shares are convertible, at the holder’s option, into 0.8460 shares of common stock (equal to an initial conversion price of approximately $59.10).

     During the three months ended March 31, 2012, we issued 11,500,000 of 6.50% Series J Cumulative Redeemable Preferred Stock. Dividends are payable quarterly in arrears. The preferred stock, which has no stated maturity, may be redeemed by us at a redemption price of $25.00 per share, plus accrued and unpaid dividends on such shares to the redemption date, on or after March 7, 2017.

     Common Stock. The following is a summary of our common stock issuances during the periods indicated (dollars in thousands, except per share amounts):

Shares IssuedAverage PriceGross ProceedsNet Proceeds
September 2010 public issuance 9,200,000$ 45.75$ 420,900$ 403,921
December 2010 public issuance 11,500,000 43.75 503,125 482,448
2010 Dividend reinvestment plan issuances 1,957,364 43.95 86,034 86,034
2010 Equity shelf program issuances 431,082 44.94 19,371 19,013
2010 Option exercises 129,054 31.17 4,022 4,022
2010 Totals 23,217,500$ 1,033,452$ 995,438
March 2011 public issuance 28,750,000$ 49.25$ 1,415,938$ 1,358,543
November 2011 public issuance 12,650,000 50.00 632,500 606,595
2011 Dividend reinvestment plan issuances 2,534,707 48.44 122,794 121,846
2011 Equity shelf program issuances 848,620 50.53 42,888 41,982
2011 Option exercises 232,081 37.17 8,628 8,628
2011 Totals 45,015,408$ 2,222,748$ 2,137,594
February 2012 public issuance 20,700,000$ 53.50$ 1,107,450$ 1,062,256
August 2012 public issuance 13,800,000 58.75 810,750 778,011
September 2012 public issuance 29,900,000 56.00 1,674,400 1,606,665
2012 Dividend reinvestment plan issuances 2,136,140 56.37 120,411 120,411
2012 Option exercises 341,371 40.86 13,949 13,949
2012 Senior note conversions 1,039,721 0 0
2012 Totals 67,917,232$ 3,726,960$ 3,581,292

     Dividends. The increase in dividends is primarily attributable to increases in our common and preferred shares outstanding as described above. Please refer to Notes 2 and 18 for information related to federal income tax of dividends. The following is a summary of our dividend payments (in thousands, except per share amounts):

Year Ended
December 31, 2012December 31, 2011December 31, 2010
Per ShareAmountPer ShareAmountPer ShareAmount
Common Stock$ 2.96000$ 653,321$ 2.83500$ 483,746$ 2.74000$ 348,578
Series D Preferred Stock 0.50301 2,012 1.96875 7,875 1.96875 7,875
Series E Preferred Stock - 0 - 0 1.12500 94
Series F Preferred Stock 0.48715 3,410 1.90625 13,344 1.90625 13,344
Series G Preferred Stock - 0 - 0 1.40640 332
Series H Preferred Stock 2.85840 1,000 2.85840 1,000 - 0
Series I Preferred Stock 3.25000 46,719 1.33159 38,283 - 0
Series J Preferred Stock 1.39038 15,988 - 0 - 0
Totals$ 722,450$ 544,248$ 370,223

Accumulated Other Comprehensive Income. The following is a summary of accumulated other comprehensive income/(loss) as of the dates indicated (in thousands):

December 31, 2012December 31, 2011
Unrecognized gains (losses) on cash flow hedges$ (6,957)$ (8,561)
Unrecognized gains (losses) on equity investments (216) (619)
Unrecognized gains (losses) on foreign currency translation (881) 0
Unrecognized actuarial gains (losses) (2,974) (2,748)
Totals$ (11,028)$ (11,928)

     Other Equity. Other equity consists of accumulated option compensation expense, which represents the amount of amortized compensation costs related to stock options awarded to employees and directors. Expense, which is recognized as the options vest based on the market value at the date of the award, totaled $2,875,000, $1,917,000 and $1,634,000 for the years ended December 31, 2012, 2011 and 2010, respectively.