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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY AND COMPREHENSIVE INCOME (USD $) In Thousands, except Share data, unless otherwise specified | Total | Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Income (Loss) | Retained Earnings | Parent | Noncontrolling Interest
--- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2010 | $ 587,522 | $ 40 | $ 303,823 | $ (2,857) | $ 17,206 | $ 318,212 | $ 269,310
Balance (in Shares) at Dec. 31, 2010 |  | 40,254,000 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership (in Shares) |  | 11,000 |  |  |  |  |
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership | 0 | 0 | 49 | 0 | 0 | 49 | (49)
Issuance of OP Units to Acquire Real Estate | 0 |  |  |  |  |  |
Dividends declared ($0.54 per Common Share) | (22,514) | 0 | 0 | 0 | (21,776) | (21,776) | (738)
Vesting of employee Restricted Share and LTIP awards (in Shares) |  | 95,000 |  |  |  |  |
Vesting of employee Restricted Share and LTIP awards | 3,218 | 0 | 389 | 0 | 0 | 389 | 2,829
Common Shares issued under Employee Share Purchase Plan (in Shares) |  | 4,000 |  |  |  |  |
Common Shares issued under Employee Share Purchase Plan | 68 | 0 | 68 | 0 | 0 | 68 | 0
Issuance of LTIP Unit awards to employees | 2,441 | 0 | 0 | 0 | 0 | 0 | 2,441
Issuance of Common Shares to trustees (in Shares) |  | 8,000 |  |  |  |  |
Issuance of Common Shares to trustees | 171 | 0 | 171 | 0 | 0 | 171 | 0
Exercise of Share options (in Shares) |  | 1,000 |  |  |  |  |
Exercise of Share options | 7 | 0 | 7 | 0 | 0 | 7 | 0
Employee Restricted Shares cancelled (in Shares) |  | (40,000) |  |  |  |  |
Employee Restricted Shares cancelled | (724) | 0 | (724) | 0 | 0 | (724) | 0
Noncontrolling interest distributions | (815) | 0 | 0 | 0 | 0 | 0 | (815)
Noncontrolling Interest contributions | 43,646 | 0 | 0 | 0 | 0 | 0 | 43,646
Balance before adjustment towards comprehensive income (in Shares) |  | 40,333,000 |  |  |  |  |
Balance before adjustment towards comprehensive income | 613,020 | 40 | 303,783 | (2,857) | (4,570) | 296,396 | 316,624
Comprehensive (loss) income: |  |  |  |  |  |  |
Net income | 39,340 | 0 | 0 | 0 | 43,668 | 43,668 | (4,328)
Unrealized loss on valuation of swap agreements | (5,209) | 0 | 0 | (3,265) | 0 | (3,265) | (1,944)
Reclassification of realized interest on swap agreements | 2,398 | 0 | 0 | 1,891 | 0 | 1,891 | 507
Total comprehensive (loss) income | 36,529 | 0 | 0 | (1,374) | 43,668 | 42,294 | (5,765)
Balance at Sep. 30, 2011 | 649,549 | 40 | 303,783 | (4,231) | 39,098 | 338,690 | 310,859
Balance (in Shares) at Sep. 30, 2011 |  | 40,333,000 |  |  |  |  |
Balance at Dec. 31, 2011 | 769,309 | 43 | 348,667 | (3,913) | 39,317 | 384,114 | 385,195
Balance (in Shares) at Dec. 31, 2011 | 42,586,376 | 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) |  | 171,000 |  |  |  |  |
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership | 0 | 0 | 2,711 | 0 | 0 | 2,711 | (2,711)
Issuance of Common Shares, net of issuance costs (in Shares) |  | 4,332,000 |  |  |  |  |
Issuance of Common Shares, net of issuance costs | 98,312 | 4 | 98,308 | 0 | 0 | 98,312 | 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) | (25,324) | 0 | 0 | 0 | (24,477) | (24,477) | (847)
Vesting of employee Restricted Share and LTIP awards (in Shares) |  | 44,000 |  |  |  |  |
Vesting of employee Restricted Share and LTIP awards | 2,707 | 0 | 128 | 0 | 0 | 128 | 2,579
Common Shares issued under Employee Share Purchase Plan (in Shares) |  | 3,000 |  |  |  |  |
Common Shares issued under Employee Share Purchase Plan | 59 | 0 | 59 | 0 | 0 | 59 | 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 | 280 | 0 | 280 | 0 | 0 | 280 | 0
Exercise of Share options (in Shares) |  | 11,000 |  |  |  |  |
Exercise of Share options | 160 | 0 | 160 | 0 | 0 | 160 | 0
Employee Restricted Shares cancelled (in Shares) |  | (8,000) |  |  |  |  |
Employee Restricted Shares cancelled | (150) | 0 | (150) | 0 | 0 | (150) | 0
Noncontrolling interest distributions | (62,645) | 0 | 0 | 0 | 0 | 0 | (62,645)
Noncontrolling Interest contributions | 122,309 | 0 | 0 | 0 | 0 | 0 | 122,309
Balance before adjustment towards comprehensive income (in Shares) |  | 47,139,000 |  |  |  |  |
Balance before adjustment towards comprehensive income | 909,873 | 47 | 450,163 | (3,913) | 14,840 | 461,137 | 448,736
Comprehensive (loss) income: |  |  |  |  |  |  |
Net income | 20,652 | 0 | 0 | 0 | 18,429 | 18,429 | 2,223
Unrealized loss on valuation of swap agreements | (3,870) | 0 | 0 | (2,212) | 0 | (2,212) | (1,658)
Reclassification of realized interest on swap agreements | 1,964 | 0 | 0 | 1,362 | 0 | 1,362 | 602
Total comprehensive (loss) income | 18,746 | 0 | 0 | (850) | 18,429 | 17,579 | 1,167
Balance at Sep. 30, 2012 | $ 928,619 | $ 47 | $ 450,163 | $ (4,763) | $ 33,269 | $ 478,716 | $ 449,903
Balance (in Shares) at Sep. 30, 2012 | 47,138,544 | 47,139,000 |  |  |  |  |

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