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Consolidated Statements of Stockholders' Equity (Parenthetical) (USD $) | 3 Months Ended
--- | ---
Mar. 31, 2014
Issuance of common stock, shares | 71,782
Pursuant to dividend reinvestment plan, shares | 39,588
Exercise of employee stock options and issuance of directors' deferred stock, shares | 32,194
Issuance of partnership units, shares | 91,352
Distributions payable common stock, per share (in usd per share) | $ 0.40
Dividend Declared |
Distributions payable common stock, per share (in usd per share) | $ 0.40
Distributions partnership units, per unit (in usd per unit) | $ 0.40
Dividend Declared | Series A Preferred Stock |
Preferred stock, per share (in usd per share) | $ 50.00
Dividend Declared | Series C Preferred Stock |
Preferred stock, per share (in usd per share) | $ 42.97

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