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Common Stock and Other Equity Related Transactions (Tables) | 12 Months Ended
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Dec. 31, 2016
Equity [Abstract] |
Schedule of Common Stock Outstanding Roll Forward | The following table presents the changes in our outstanding common stock for the years ended December 31, 2016, 2015 and 2014 (excluding OP Units of 7,170,000, 7,207,678, and 7,231,967 outstanding at December 31, 2016, 2015 and 2014, respectively):
| Years Ended December 31,
| 2016 |  | 2015 |  | 2014
Shares outstanding at January 1, | 84,253,065 |  |  | 83,879,779 |  |  | 83,313,677 |
Common stock issued through the At-The-Market Equity Offering Program | 683,548 |  |  | — |  |  | — |
Common stock issued through conversion of OP Units | 37,678 |  |  | 24,289 |  |  | 435,756 |
Common stock issued through exercise of options | 440,000 |  |  | 220,000 |  |  | — |
Common stock issued through stock grants | 133,726 |  |  | 158,013 |  |  | 186,666 |
Common stock issued through ESPP and Dividend Reinvestment Plan | 17,373 |  |  | 20,134 |  |  | 31,203 |
Common stock repurchased and retired | (36,004 | ) |  | (49,150 | ) |  | (87,523 | )
Shares outstanding at December 31, | 85,529,386 |  |  | 84,253,065 |  |  | 83,879,779 |
Dividends Declared | The following regular quarterly distributions have been declared and paid to common stockholders and common OP Unit non-controlling interests since January 1, 2014:
Distribution Amount Per Share |  | For the Quarter Ending |  | Stockholder Record Date |  | Payment Date
$0.3250 |  | March 31, 2014 |  | March 28, 2014 |  | April 11, 2014
$0.3250 |  | June 30, 2014 |  | June 27, 2014 |  | July 11, 2014
$0.3250 |  | September 30, 2014 |  | September 26, 2014 |  | October 10, 2014
$0.3250 |  | December 31, 2014 |  | December 26, 2014 |  | January 9, 2015
$0.3750 |  | March 31, 2015 |  | March 27, 2015 |  | April 10, 2015
$0.3750 |  | June 30, 2015 |  | June 26, 2015 |  | July 10, 2015
$0.3750 |  | September 30, 2015 |  | September 25, 2015 |  | October 9, 2015
$0.3750 |  | December 31, 2015 |  | December 28, 2015 |  | January 8, 2016
$0.4250 |  | March 31, 2016 |  | March 25, 2016 |  | April 8, 2016
$0.4250 |  | June 30, 2016 |  | June 24, 2016 |  | July 8, 2016
$0.4250 |  | September 30, 2016 |  | September 30, 2016 |  | October 14, 2016
$0.4250 |  | December 31, 2016 |  | December 30, 2016 |  | January 13, 2017
Schedule of Stock by Class | The following table presents the shares that were issued under the ATM equity offering program during the year ended December 31, 2016 (amounts in thousands, except share data):
|  | Year Ended December 31, 2016
Shares of Common Stock sold |  | 683,548 |
Weighted average price |  | $ | 73.15 |
Total gross proceeds |  | $ | 50,000 |
Commissions paid to sales agents |  | $ | 657 |

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- Definition Tabular disclosure of an entity's stock, including par or stated value per share, number and dollar amount of share subscriptions, shares authorized, shares issued, shares outstanding, number and dollar amount of shares held in an employee trust, dividend per share, total dividends, share conversion features, par value plus additional paid in capital, the value of treasury stock and other information necessary to a fair presentation, and EPS information. Stock by class includes common, convertible, and preferred stocks which are not redeemable or redeemable solely at the option of the issuer. Includes preferred stock with redemption features that are solely within the control of the issuer and mandatorily redeemable stock if redemption is required to occur only upon liquidation or termination of the reporting entity. If more than one issue is outstanding, state the title of each issue and the corresponding dollar amount; dollar amount of any shares subscribed but unissued and the deduction of subscriptions receivable there from; number of shares authorized, issued, and outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=65877616&loc=d3e177068-122764 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(d)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 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(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: 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 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21553-112644 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 8: 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 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65888546&loc=d3e21300-112643 Reference 10: 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(27)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21538-112644 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644 + Details
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