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Consolidated Statements of Beneficiaries' Equity - USD ($) $ in Thousands | Total | Preferred Stock [Member] | Common Stock [Member] | Deferred Compensation, Share-based Payments [Member] | Additional Paid-in Capital [Member] | Common Stock In Grantor Trust [Member] | Cumulative Earnings [Member] | Accumulated Other Comprehensive Loss [Member] | Cumulative Distributions [Member] | Noncontrolling Interest [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance, Shares at Dec. 31, 2013 |  | 4,000,000 | 156,731,993 | 312,279 |  |  |  |  |  |
Beginning Balance at Dec. 31, 2013 | $ 1,921,435 | $ 40 | $ 1,566 | $ 5,407 | $ 2,971,596 | $ (5,407) | $ 522,528 | $ (2,995) | $ (1,592,515) | $ 21,215
Net income (loss) | 6,942 |  |  |  |  |  | 6,975 |  |  | (33)
Other comprehensive income (loss) | (1,630) |  |  |  |  |  |  | (1,612) |  | (18)
Issuance of Common Shares of Beneficial Interest, Shares |  |  | 21,850,000 |  |  |  |  |  |  |
Issuance of Common Shares of Beneficial Interest | 335,398 |  | $ 219 |  | 335,179 |  |  |  |  |
Equity issuance costs | (495) |  |  |  | (495) |  |  |  |  |
Conversion of LP Units to Common Shares, Shares |  |  | 228,536 |  |  |  |  |  |  |
Conversion of LP Units to Common Shares |  |  | $ 2 |  | 3,612 |  |  |  |  | (3,614)
Share-based compensation activity, Shares |  |  | 403,902 |  |  |  |  |  |  |
Share-based compensation activity | 6,847 |  | $ 6 |  | 6,857 |  | (16) |  |  |
Share Issuance from/(to) Deferred Compensation Plan, Shares |  |  | 80,152 | 72,257 |  |  |  |  |  |
Share issuance from/(to) Deferred Compensation Plan | (90) |  |  | $ 812 | (90) | (812) |  |  |  |
Share Choice Plan Issuance, Shares |  |  | (1,423) |  |  |  |  |  |  |
Adjustment to Non-controlling Interest |  |  |  |  | (1,966) |  |  |  |  | 1,966
Preferred Share distributions | (6,900) |  |  |  |  |  |  |  | (6,900) |
Distributions declared | (102,181) |  |  |  |  |  |  |  | (101,164) | (1,017)
Ending Balance, Shares at Dec. 31, 2014 |  | 4,000,000 | 179,293,160 | 384,536 |  |  |  |  |  |
Ending Balance at Dec. 31, 2014 | 2,159,326 | $ 40 | $ 1,793 | $ 6,219 | 3,314,693 | (6,219) | 529,487 | (4,607) | (1,700,579) | 18,499
Net income (loss) | (30,740) |  |  |  |  |  | (30,401) |  |  | (339)
Other comprehensive income (loss) | $ (590) |  |  |  |  |  |  | (585) |  | (5)
Repurchase and retirement of Common Shares of Beneficial Interest, Shares | (5,209,437) |  | (5,209,437) |  |  |  |  |  |  |
Repurchase and retirement of Common Shares of Beneficial Interest | $ (67,325) |  | $ (52) |  | (67,273) |  |  |  |  |
Issuance of partnership interest in joint venture | 1,025 |  |  |  |  |  |  |  |  | 1,025
Bonus share issuance, Shares |  |  | 8,447 |  |  |  |  |  |  |
Bonus share issuance | 125 |  |  |  | 125 |  |  |  |  |
Equity issuance costs | (105) |  |  |  | (105) |  |  |  |  |
Share-based compensation activity, Shares |  |  | 509,675 | 280,011 |  |  |  |  |  |
Share-based compensation activity | 5,097 |  | $ 6 |  | 5,091 |  |  |  |  |
Share Issuance from/(to) Deferred Compensation Plan, Shares |  |  | 88,146 | 81,139 |  |  |  |  |  |
Share issuance from/(to) Deferred Compensation Plan | (2) |  |  | $ 5,699 | (2) | (5,699) |  |  |  |
Share Choice Plan Issuance, Shares |  |  | (1,423) |  |  |  |  |  |  |
Adjustment to Non-controlling Interest |  |  |  |  | 93 |  |  |  |  | (93)
Preferred Share distributions | (6,900) |  |  |  |  |  |  |  | (6,900) |
Distributions declared | (107,820) |  |  |  |  |  |  |  | (106,899) | (921)
Ending Balance, Shares at Dec. 31, 2015 |  | 4,000,000 | 174,688,568 | 745,686 |  |  |  |  |  |
Ending Balance at Dec. 31, 2015 | 1,952,091 | $ 40 | $ 1,747 | $ 11,918 | 3,252,622 | (11,918) | 499,086 | (5,192) | (1,814,378) | 18,166
Net income (loss) | 40,501 |  |  |  |  |  | 40,191 |  |  | 310
Other comprehensive income (loss) | $ 3,475 |  |  |  |  |  |  | 3,447 |  | 28
Repurchase and retirement of Common Shares of Beneficial Interest, Shares | 0 |  |  |  |  |  |  |  |  |
Issuance of partnership interest in consolidated real estate venture | $ 108 |  |  |  |  |  |  |  |  | 108
Conversion of LP Units to Common Shares, Shares |  |  | 55,303 |  |  |  |  |  |  |
Conversion of LP Units to Common Shares |  |  | $ 1 |  | 874 |  |  |  |  | (875)
Share-based compensation activity, Shares |  |  | 405,200 |  |  |  |  |  |  |
Share-based compensation activity | 5,764 |  | $ 4 |  | 5,718 |  | 42 |  |  |
Share Issuance from/(to) Deferred Compensation Plan, Shares |  |  | (8,311) | 153,771 |  |  |  |  |  |
Share issuance from/(to) Deferred Compensation Plan | (47) |  |  | $ 1,766 | (47) | (1,766) |  |  |  |
Adjustment to Non-controlling Interest |  |  |  |  | (297) |  |  |  |  | 297
Preferred Share distributions | (6,900) |  |  |  |  |  |  |  | (6,900) |
Distributions declared | (111,555) |  |  |  |  |  |  |  | (110,614) | (941)
Ending Balance, Shares at Dec. 31, 2016 |  | 4,000,000 | 175,140,760 | 899,457 |  |  |  |  |  |
Ending Balance at Dec. 31, 2016 | $ 1,883,437 | $ 40 | $ 1,752 | $ 13,684 | $ 3,258,870 | $ (13,684) | $ 539,319 | $ (1,745) | $ (1,931,892) | $ 17,093

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