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CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (USD $) | Total | Redeemable Preferred Stock [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Cumulative translation adjustment [Member] | Noncontrolling Interest [Member]
--- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2010 | $ 127,983,123 | $ 10,070 | $ 8,733,236 | $ 81,349,944 | $ 36,289,706 | $ 0 | $ 1,600,167
Balance (in shares) at Dec. 31, 2010 |  | 16,784 | 14,555,393 |  |  |  |
Issue of share capital | 110,985 | 5,007 | 6,694 | 99,284 | 0 | 0 | 0
Issue of share capital (in shares) |  | 8,345 | 11,158 |  |  |  |
Conversion of preferred stock | 0 | (1,287) | 1,287 | 0 | 0 | 0 | 0
Conversion of preferred stock (in shares) |  | (2,145) | 2,145 |  |  |  |
Buyback of preferred stock | (4,999) | (334) | 0 | (4,665) | 0 | 0 | 0
Buyback of preferred stock (in shares) |  | (557) | 0 |  |  |  |
Net income | 6,551,980 | 0 | 0 | 0 | 6,113,218 | 0 | 438,762
Dividends declared | (4,854,381) | 0 | 0 | 0 | (4,371,981) | 0 | (482,400)
Issue of options and preferred stock | 494,648 | 0 | 0 | 494,648 | 0 | 0 | 0
Issue of options and preferred stock (in shares) |  | 0 | 0 |  |  |  |
Balance at Dec. 31, 2011 | 130,281,356 | 13,456 | 8,741,217 | 81,939,211 | 38,030,943 | 0 | 1,556,529
Balance (in shares) at Dec. 31, 2011 |  | 22,427 | 14,568,696 |  |  |  |
Issue of share capital | 184,254 | 6,850 | 13,013 | 164,391 | 0 | 0 | 0
Issue of share capital (in shares) |  | 11,417 | 21,686 |  |  |  |
Conversion of preferred stock | 0 | (1,577) | 1,577 | 0 | 0 | 0 | 0
Conversion of preferred stock (in shares) |  | (2,629) | 2,629 |  |  |  |
Buyback of preferred stock | (7,789) | (570) | 0 | (7,219) |  | 0 | 0
Buyback of preferred stock (in shares) |  | (950) | 0 |  |  |  |
Net income | 9,624,009 | 0 | 0 | 0 | 9,315,514 | 0 | 308,495
Dividends declared | (4,453,278) | 0 | 0 | 0 | (4,381,278) | 0 | (72,000)
Foreign currency translation adjustment | (16,210) | 0 | 0 | 0 | 0 | (15,400) | (810)
Capital contribution | 135,000 | 0 | 0 | 0 | 0 | 0 | 135,000
Stock-based compensation | 371,038 | 0 | 0 | 371,038 | 0 | 0 | 0
Balance at Dec. 31, 2012 | 136,118,380 | 18,159 | 8,755,807 | 82,467,421 | 42,965,179 | (15,400) | 1,927,214
Balance (in shares) at Dec. 31, 2012 |  | 30,265 | 14,593,011 |  |  |  |
Issue of share capital | 217,873 | 6,108 | 15,067 | 196,698 | 0 | 0 | 0
Issue of share capital (in shares) |  | 10,180 | 25,111 |  |  |  |
Conversion of preferred stock | 0 | (2,832) | 2,832 |  | 0 | 0 | 0
Conversion of preferred stock (in shares) |  | (4,720) | 4,720 |  |  |  |
Buyback of preferred stock | (4,265) | (313) | 0 | (3,952) | 0 | 0 | 0
Buyback of preferred stock (in shares) |  | (521) | 0 |  |  |  |
Net income | 9,148,489 | 0 | 0 | 0 | 8,594,519 | 0 | 553,970
Exercise of options | 514,082 | 1,323 | 38,012 | 474,747 | 0 | 0 | 0
Exercise of options (in shares) | 65,559 | 2,204 | 63,355 |  |  |  |
Dividends declared | (4,404,150) | 0 | 0 | 0 | (4,404,150) | 0 | 0
Foreign currency translation adjustment | (480,614) | 0 | 0 | 0 | 0 | (456,583) | (24,031)
Capital contribution | 142,105 | 0 | 0 | 0 | 0 | 0 | 142,105
Stock-based compensation | 246,473 | 0 | 0 | 246,473 | 0 | 0 | 0
Balance at Dec. 31, 2013 | $ 141,498,373 | $ 22,445 | $ 8,811,718 | $ 83,381,387 | $ 47,155,548 | $ (471,983) | $ 2,599,258
Balance (in shares) at Dec. 31, 2013 |  | 37,408 | 14,686,197 |  |  |  |

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