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EQUITY (Tables) | 6 Months Ended
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Jun. 30, 2016
EQUITY |
Schedule of stockholders' equity (in thousands) |
|  | Six months ended June 30, |
|  | 2016 |  | 2015 |
|  | ATN |  | Non-Controlling |  |  |  |  | ATN |  | Non-Controlling |  | Total |
|  | International, Inc. |  | Interests |  | Total Equity |  | International, Inc. |  | Interests |  | Equity |
Equity, beginning of period |  | $ | 680,299 |  | $ | 81,425 |  | $ | 761,724 |  | $ | 677,222 |  | $ | 60,960 |  | $ | 738,182 |
Stock-based compensation |  |  | 3,626 |  |  | — |  |  | 3,626 |  |  | 2,677 |  |  | — |  |  | 2,677 |
Comprehensive income: |  |  | 0 |  |  | 0 |  |  |  |  |  | 0 |  |  | 0 |  |  |  |
Net income |  |  | 3,034 |  |  | 5,877 |  |  | 8,911 |  |  | 6,181 |  |  | 8,345 |  |  | 14,526 |
Translation adjustment |  |  | (36) |  |  | — |  |  | (36) |  |  | 28 |  |  | — |  |  | 28 |
Total comprehensive income |  |  | 2,998 |  |  | 5,877 |  |  | 8,875 |  |  | 6,209 |  |  | 8,345 |  |  | 14,554 |
Issuance of common stock upon exercise of stock options |  |  | 585 |  |  | — |  |  | 585 |  |  | 2,074 |  |  | — |  |  | 2,074 |
Dividends declared on common stock |  |  | (10,330) |  |  | — |  |  | (10,330) |  |  | (9,306) |  |  | — |  |  | (9,306) |
Distributions to non-controlling interests |  |  | — |  |  | (4,404) |  |  | (4,404) |  |  | — |  |  | (9,261) |  |  | (9,261) |
Investments made by non-controlling interests |  |  | — |  |  | 21,904 (1) |  |  | 21,904 |  |  | — |  |  | 905 |  |  | 905 |
Acquisition of KeyTech |  |  | — |  |  | 32,903 |  |  | 32,903 |  |  | — |  |  | — |  |  | — |
Sale of non-controlling interests |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 20,013 |  |  | 20,013 |
Purchase of non-controlling interests |  |  | (4,105) |  |  | (2,940) |  |  | (7,045) |  |  | — |  |  | — |  |  | — |
Purchase of treasury stock |  |  | (2,407) |  |  | — |  |  | (2,407) |  |  | (1,955) |  |  | — |  |  | (1,955) |
Equity, end of period |  | $ | 670,666 |  | $ | 134,765 |  | $ | 805,431 |  | $ | 676,921 |  | $ | 80,962 |  | $ | 757,883 |

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- Definition Tabular disclosure of changes in the separate accounts comprising stockholders' equity (in addition to retained earnings) and of the changes in the number of shares of equity securities during at least the most recent annual fiscal period and any subsequent interim period presented is required to make the financial statements sufficiently informative if both financial position and results of operations are presented. + References Reference 1: 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 + Details
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