|
Consolidated Statements of Stockholders' Equity (Parenthetical) (USD $)
|
12 Months Ended |
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
| Issuance of common stock, shares |
531,164 |
753,607 |
734,786 |
| Restricted shares |
|
|
186,968 |
| Pursuant to dividend reinvestment plan, shares |
475,162 |
595,388 |
498,248 |
| Exercise of employee stock options and issuance of directors' deferred stock, shares |
56,002 |
158,219 |
49,570 |
| Partnership units, shares |
|
|
1,497,814 |
| Issuance of partnership units pursuant to dividend reinvestment plan, shares |
88,309 |
|
|
|
Series A Preferred Stock
|
|
|
|
| Redemption of preferred stock, shares |
24,000 |
|
|
|
Series B Preferred Stock
|
|
|
|
| Redemption of preferred stock, shares |
31,731 |
|
|
|
Series C Preferred Stock
|
|
|
|
| Issuance of common stock, shares |
56,000 |
|
|
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Dividend Declared
|
|
|
|
| Distributions payable common stock (in usd per share) |
$ 0.36 |
$ 0.36 |
$ 0.36 |
| Distributions partnership units (in usd per share) |
$ 0.36 |
$ 0.36 |
$ 0.36 |
|
Dividend Declared | Series A Preferred Stock
|
|
|
|
| Preferred stock (in usd per share) |
$ 50.00 |
$ 50.00 |
$ 50.00 |
|
Dividend Declared | Series B Preferred Stock
|
|
|
|
| Preferred stock (in usd per share) |
|
$ 56.25 |
$ 56.25 |
|
Dividend Declared | Series C Preferred Stock
|
|
|
|
| Preferred stock (in usd per share) |
$ 42.97 |
|
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