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22. Equity (Details Narrative) - BRL (R$) R$ / shares in Units, R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Equity Details Narrative |  |  |
Authorized capital | R$ 15,000,000 | R$ 15,000,000 |
Minimum mandatory dividend per share and per ADS | R$ .87539 | R$ 1.0240 | R$ .1863
Additional proposed dividends | R$ 105,543 | R$ 123,557 | R$ 22,527
Withholding income tax recognized in current liabilities | 52,004 | 60,838 |
Interest on capital balance payable | 598,612 | 700,034 |
Interest on capital balance payable declared | 598,336 | 699,936 |
Interest on capital balance payable witheld income tax | 276 | 98 |
Investment reserve | 6,939,296 | R$ 5,249,830 |
Reallocation of retained earnings to investment reserve account | 1,689,466 |  |
Subscribed and paid-in-capital |  | 683,509,869 | 683,509,869
Surplus minimum mandatory | 62,719 |  |
Dividends | R$ 703,879 | R$ 823,493 |
Dividend per common share | R$ 1.0298 | R$ 1.2048 |

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