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CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands | Total | Total Stockholders' Equity | Common Stock | Additional Paid-in Capital | Retained Earnings (Accumulated Deficit) | Noncontrolling Interests
--- | --- | --- | --- | --- | --- | ---
Balance (in shares) at Dec. 31, 2013 |  |  | 140,733,683 |  |  |
Balance at Dec. 31, 2013 | $ 3,718,717 | $ 3,358,749 | $ 1,407 | $ 3,906,148 | $ (548,806) | $ 359,968
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income | 1,606,931 | 1,499,042 |  |  | 1,499,042 | 107,889
Amortization of share and unit-based plans (in shares) |  |  | 168,379 |  |  |
Amortization of share and unit-based plans | 34,873 | 34,873 | $ 2 | 34,871 |  |
Employee stock purchases (in shares) |  |  | 25,007 |  |  |
Employee stock purchases | 1,231 | 1,231 |  | 1,231 |  |
Stock issued to acquire properties (in shares) |  |  | 17,140,845 |  |  |
Stock issued to acquire properties | 1,161,274 | 1,161,274 | $ 172 | 1,161,102 |  |
Distributions | (353,495) | (353,495) |  |  | (353,495) |
Distributions to noncontrolling interests | (32,230) |  |  |  |  | (32,230)
Change in noncontrolling interests due to acquisition/disposition of consolidated entities | (97,216) | (3,858) |  | (3,858) |  | (93,358)
Conversion of noncontrolling interests to common shares (in shares) |  |  | 134,082 |  |  |
Conversion of noncontrolling interests to common shares | 0 | 2,410 | $ 1 | 2,409 |  | (2,410)
Redemption of noncontrolling interests | (236) | (157) |  | (157) |  | (79)
Adjustment of noncontrolling interests in Operating Partnership | 0 | (59,949) |  | (59,949) |  | 59,949
Balance (in shares) at Dec. 31, 2014 |  |  | 158,201,996 |  |  |
Balance at Dec. 31, 2014 | 6,039,849 | 5,640,120 | $ 1,582 | 5,041,797 | 596,741 | 399,729
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income | 522,912 | 487,562 |  |  | 487,562 | 35,350
Amortization of share and unit-based plans (in shares) |  |  | 241,186 |  |  |
Amortization of share and unit-based plans | 34,375 | 34,375 | $ 2 | 34,373 |  |
Employee stock purchases (in shares) |  |  | 23,036 |  |  |
Employee stock purchases | 1,512 | 1,512 |  | 1,512 |  |
Stock repurchase (in shares) |  |  | (4,140,788) |  |  |
Stock repurchase | (400,144) | (400,144) | $ (41) | (153,602) | (246,501) |
Distributions | (1,050,562) | (1,050,562) |  |  | (1,050,562) |
Distributions to noncontrolling interests | (74,677) |  |  |  |  | (74,677)
Contributions from noncontrolling interests | 23 |  |  |  |  | 23
Other | (1,593) | (1,593) |  | (1,593) |  |
Conversion of noncontrolling interests to common shares (in shares) |  |  | 79,556 |  |  |
Conversion of noncontrolling interests to common shares | 0 | 1,559 | $ 1 | 1,558 |  | (1,559)
Redemption of noncontrolling interests | (456) | (343) |  | (343) |  | (113)
Adjustment of noncontrolling interests in Operating Partnership | $ 0 | 2,928 |  | 2,928 |  | (2,928)
Balance (in shares) at Dec. 31, 2015 | 154,404,986 |  | 154,404,986 |  |  |
Balance at Dec. 31, 2015 | $ 5,071,239 | 4,715,414 | $ 1,544 | 4,926,630 | (212,760) | 355,825
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income | 554,839 | 516,995 |  |  | 516,995 | 37,844
Amortization of share and unit-based plans (in shares) |  |  | 139,671 |  |  |
Amortization of share and unit-based plans | 40,529 | 40,529 | $ 2 | 40,527 |  |
Employee stock purchases (in shares) |  |  | 28,147 |  |  |
Employee stock purchases | 1,697 | 1,697 |  | 1,697 |  |
Stock repurchase (in shares) |  |  | (11,123,011) |  |  |
Stock repurchase | (800,018) | (800,018) | $ (111) | (412,391) | (387,516) |
Distributions | (405,501) | (405,501) |  |  | (405,501) |
Distributions to noncontrolling interests | (35,677) |  |  |  |  | (35,677)
Contributions from noncontrolling interests | 90 |  |  |  |  | 90
Conversion of noncontrolling interests to common shares (in shares) |  |  | 535,243 |  |  |
Conversion of noncontrolling interests to common shares | 0 | 12,448 | $ 5 | 12,443 |  | (12,448)
Redemption of noncontrolling interests | (30) | (23) |  | (23) |  | (7)
Adjustment of noncontrolling interests in Operating Partnership | $ 0 | 24,346 |  | 24,346 |  | (24,346)
Balance (in shares) at Dec. 31, 2016 | 143,985,036 |  | 143,985,036 |  |  |
Balance at Dec. 31, 2016 | $ 4,427,168 | $ 4,105,887 | $ 1,440 | $ 4,593,229 | $ (488,782) | $ 321,281

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- Definition Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4I -URI http://asc.fasb.org/extlink&oid=65897068&loc=SL4590271-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=68079674&loc=SL4568740-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=68079674&loc=SL4568447-111683 + Details
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