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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified | Total | Parent | Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Income (Loss) | Retained Earnings | Noncontrolling Interest
--- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2011 | $ 769,309 | $ 384,114 | $ 43 | $ 348,667 | $ (3,913) | $ 39,317 | $ 385,195
Balance (in Shares) at Dec. 31, 2011 |  |  | 42,586,000 |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership (in Shares) |  |  | 161,000 |  |  |  |
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership | 0 | 2,534 | 0 | 2,534 | 0 | 0 | (2,534)
Issuance of Common Shares, net of issuance costs (in Shares) |  |  | 808,000 |  |  |  |
Issuance of Common Shares, net of issuance costs | 17,761 | 17,761 | 1 | 17,760 | 0 | 0 | 0
Issuance of OP Units to Acquire Real Estate | 2,279 | 0 | 0 | 0 | 0 | 0 | 2,279
Dividends declared ($0.54 per Common Share) | (8,095) | (7,808) | 0 | 0 | 0 | (7,808) | (287)
Vesting of employee Restricted Share and LTIP awards (in Shares) |  |  | 22,000 |  |  |  |
Vesting of employee Restricted Share and LTIP awards | 886 | 40 | 0 | 40 | 0 | 0 | 846
Common Shares issued under Employee Share Purchase Plan (in Shares) |  |  | 1,000 |  |  |  |
Common Shares issued under Employee Share Purchase Plan | 20 | 20 | 0 | 20 | 0 | 0 | 0
Issuance Of LTIP Unit Awards To Employees | 2,577 | 0 | 0 | 0 | 0 | 0 | 2,577
Issuance of Common Shares to trustees (in Shares) |  |  | 0 |  |  |  |
Issuance of Common Shares to trustees | 84 | 84 | 0 | 84 | 0 | 0 | 0
Exercise of Share options (in Shares) |  |  | 1,000 |  |  |  |
Exercise of Share options | 23 | 23 | 0 | 23 | 0 | 0 | 0
Employee Restricted Shares cancelled (in Shares) |  |  | (7,000) |  |  |  |
Employee Restricted Shares cancelled | (150) | (150) | 0 | (150) | 0 | 0 | 0
Noncontrolling interest distributions | (3,450) | 0 | 0 | 0 | 0 | 0 | (3,450)
Noncontrolling Interest, Increase from Contributions | 38,578 | 0 | 0 | 0 | 0 | 0 | 38,578
Balance before adjustment towards comprehensive income (in Shares) |  |  | 43,572,000 |  |  |  |
Balance before adjustment towards comprehensive income | 819,822 | 396,618 | 44 | 368,978 | (3,913) | 31,509 | 423,204
Comprehensive (loss) income: |  |  |  |  |  |  |
Net income | 2,823 | 4,010 | 0 | 0 | 0 | 4,010 | (1,187)
Unrealized (loss) income on valuation of swap agreements | 57 | 124 | 0 | 0 | 124 | 0 | (67)
Reclassification of realized interest on swap agreements | 637 | 470 | 0 | 0 | 470 | 0 | 167
Total comprehensive (loss) income | 3,517 | 4,604 | 0 | 0 | 594 | 4,010 | (1,087)
Balance at Mar. 31, 2012 | 823,339 | 401,222 | 44 | 368,978 | (3,319) | 35,519 | 422,117
Balance (in Shares) at Mar. 31, 2012 |  |  | 43,572,000 |  |  |  |
Balance at Dec. 31, 2012 | 1,070,256 | 622,797 | 52 | 581,925 | (4,307) | 45,127 | 447,459
Balance (in Shares) at Dec. 31, 2012 | 52,482,598 |  | 52,482,000 |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership (in Shares) |  |  | 20,000 |  |  |  |
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership | 0 | 438 | 0 | 438 | 0 | 0 | (438)
Issuance of Common Shares, net of issuance costs (in Shares) |  |  | 1,997,000 |  |  |  |
Issuance of Common Shares, net of issuance costs | 52,818 | 52,818 | 2 | 52,816 | 0 | 0 | 0
Issuance of OP Units to Acquire Real Estate | 0 |  |  |  |  |  |
Dividends declared ($0.54 per Common Share) | (11,757) | (11,409) | 0 | 0 | 0 | (11,409) | (348)
Vesting of employee Restricted Share and LTIP awards (in Shares) |  |  | 9,000 |  |  |  |
Vesting of employee Restricted Share and LTIP awards | 1,305 | 53 | 0 | 53 | 0 | 0 | 1,252
Common Shares issued under Employee Share Purchase Plan (in Shares) |  |  | 1,000 |  |  |  |
Common Shares issued under Employee Share Purchase Plan | 19 | 19 | 0 | 19 | 0 | 0 | 0
Issuance of Common Shares to trustees (in Shares) |  |  | 0 |  |  |  |
Issuance of Common Shares to trustees | 103 | 103 | 0 | 103 | 0 | 0 | 0
Exercise of Share options (in Shares) |  |  | 8,000 |  |  |  |
Exercise of Share options | 143 | 143 | 0 | 143 | 0 | 0 | 0
Employee Restricted Shares cancelled (in Shares) |  |  | (3,000) |  |  |  |
Employee Restricted Shares cancelled | (83) | (83) | 0 | (83) | 0 | 0 | 0
Acquisition Of Interest In Unconsolidated Affiliate Investment In Unconsolidated Affiliates | (33,949) | 0 | 0 | 0 | 0 | 0 | (33,949)
Noncontrolling interest distributions | (2,842) | 0 | 0 | 0 | 0 | 0 | (2,842)
Balance before adjustment towards comprehensive income (in Shares) |  |  | 54,514,000 |  |  |  |
Balance before adjustment towards comprehensive income | 1,076,013 | 664,879 | 54 | 635,414 | (4,307) | 33,718 | 411,134
Comprehensive (loss) income: |  |  |  |  |  |  |
Net income | 11,179 | 9,623 | 0 | 0 | 0 | 9,623 | 1,556
Unrealized (loss) income on valuation of swap agreements | (1,092) | (974) | 0 | 0 | (974) | 0 | (118)
Reclassification of realized interest on swap agreements | 592 | 349 | 0 | 0 | 349 | 0 | 243
Total comprehensive (loss) income | 10,679 | 8,998 | 0 | 0 | (625) | 9,623 | 1,681
Balance at Mar. 31, 2013 | $ 1,086,692 | $ 673,877 | $ 54 | $ 635,414 | $ (4,932) | $ 43,341 | $ 412,815
Balance (in Shares) at Mar. 31, 2013 | 54,514,365 |  | 54,514,000 |  |  |  |

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