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Equity Stock Redeemed and Retired (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Class of Stock [Line Items] |  |  |  |  |  |
Discount (Deemed negative dividend) | $ 0 | $ 0 | $ 0 |  | $ 229 |
8.05% Series B Cumulative Redeemable Preferred Stock [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Shares redeemed and retired |  |  | 0 |  | 2,740,874 |
Redemption and Repurchase Costs |  |  | 0 | [1] | 69,459 | [1]
Deemed dividend | 0 | 2,346 | 0 | [2] | 2,346 | [2]
6.50% Series C Cumulative Convertible Preferred Stock [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Shares repurchased and retired |  |  | 0 |  | 34,800 |
Redemption and Repurchase Costs |  |  | 0 |  | 1,462 |
Discount (Deemed negative dividend) |  |  | 0 | [2] | (229) | [2]
7.55% Series D Cumulative Redeemable Preferred Stock [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Shares redeemed and retired |  |  | 6,200,000 |  | 0 |
Redemption and Repurchase Costs |  |  | 155,621 | [1] | 0 | [1]
Deemed dividend | $ 5,230 | $ 0 | $ 5,230 | [2] | $ 0 | [2]
[1] | Includes accrued and unpaid dividends.
[2] | Represents the difference between the redemption/repurchase cost and historical GAAP cost.

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- Definition Preferred Stock, Costs Paid to Redeem Preferred Stock + References No definition available. + Details
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- Definition Stock Redeemed and Retired During Period, Shares + References No definition available. + Details
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- Definition The excess of (1) the carrying amount of the preferred stock in the registrant's balance sheet over (2) the fair value of the consideration transferred to the holders of the preferred stock, during the accounting period, which will be added to net earnings to arrive at net earnings available to common shareholders in the calculation of earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section S99 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27010884&loc=d3e42851-122695 + Details
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- Definition The excess of (1) fair value of the consideration transferred to the holders of the preferred stock over (2) the carrying amount of the preferred stock in the registrant's balance sheet, during the accounting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section S99 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27010884&loc=d3e42851-122695 + Details
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- Definition Number of shares that have been repurchased and retired during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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