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Capital and Reserves (Tables) | 12 Months Ended
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Dec. 31, 2017
Disclosure of share capital, reserves and other equity interest [Abstract] |
Disclosure of detailed information about common shares activity per class shares [Text Block] | The following table provides detailed information on the Bank’s common stock activity per class for each of the periods in the three-years ended December 31, 2017, 2016 and 2015:
(Share units) |  | “Class A” |  | “Class B” |  | “Class E” |  | “Class F” |  | Total |
Authorized |  |  | 40,000,000 |  |  | 40,000,000 |  |  | 100,000,000 |  |  | 100,000,000 |  |  | 280,000,000 |
Outstanding at January 1, 2015 |  |  | 6,342,189 |  |  | 2,479,050 |  |  | 29,956,100 |  |  | - |  |  | 38,777,339 |
Conversions |  |  | - |  |  | (4,581) |  |  | 4,581 |  |  | - |  |  | - |
Repurchase common stock |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |
Restricted stock issued – directors |  |  | - |  |  | - |  |  | 57,000 |  |  | - |  |  | 57,000 |
Exercised stock options - compensation plans |  |  | - |  |  | - |  |  | 70,358 |  |  | - |  |  | 70,358 |
Restricted stock units – vested |  |  | - |  |  | - |  |  | 64,208 |  |  | - |  |  | 64,208 |
Outstanding at December 31, 2015 |  |  | 6,342,189 |  |  | 2,474,469 |  |  | 30,152,247 |  |  | - |  |  | 38,968,905 |
Conversions |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |
Restricted stock issued – directors |  |  | - |  |  | - |  |  | 57,000 |  |  | - |  |  | 57,000 |
Exercised stock options - compensation plans |  |  | - |  |  | - |  |  | 68,785 |  |  | - |  |  | 68,785 |
Restricted stock units – vested |  |  | - |  |  | - |  |  | 65,358 |  |  | - |  |  | 65,358 |
Outstanding at December 31, 2016 |  |  | 6,342,189 |  |  | 2,474,469 |  |  | 30,343,390 |  |  | - |  |  | 39,160,048 |
Conversions |  |  | - |  |  | (64,663) |  |  | 64,663 |  |  | - |  |  | - |
Repurchase common stock |  |  | - |  |  | (1,000) |  |  | - |  |  | - |  |  | (1,000) |
Restricted stock issued – directors |  |  | - |  |  | - |  |  | 57,000 |  |  | - |  |  | 57,000 |
Exercised stock options - compensation plans |  |  | - |  |  | - |  |  | 142,268 |  |  | - |  |  | 142,268 |
Restricted stock units – vested |  |  | - |  |  | - |  |  | 70,519 |  |  | - |  |  | 70,519 |
Outstanding at December 31, 2017 |  |  | 6,342,189 |  |  | 2,408,806 |  |  | 30,677,840 |  |  | - |  |  | 39,428,835 |
Disclosure of treasury shares [text block] | The following table presents information regarding shares repurchased but not retired by the Bank and accordingly classified as treasury stock:
|  | “Class A” |  | “Class B” |  | “Class E” |  | Total |
|  | Shares |  | Amount |  | Shares |  | Amount |  | Shares |  | Amount |  | Shares |  | Amount |
Outstanding at January 1, 2015 |  |  | 318,140 |  |  | 10,708 |  |  | 589,174 |  |  | 16,242 |  |  | 2,295,186 |  |  | 50,677 |  |  | 3,202,500 |  |  | 77,627 |
Repurchase of common stock |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |
Restricted stock issued – directors |  |  | - |  |  | - |  |  | - |  |  | - |  |  | (57,000) |  |  | (1,259) |  |  | (57,000) |  |  | (1,259) |
Exercised stock options - compensation plans |  |  | - |  |  | - |  |  | - |  |  | - |  |  | (70,358) |  |  | (1,553) |  |  | (70,358) |  |  | (1,553) |
Restricted stock units – vested |  |  | - |  |  | - |  |  | - |  |  | - |  |  | (64,208) |  |  | (1,418) |  |  | (64,208) |  |  | (1,418) |
Outstanding at December 31, 2015 |  |  | 318,140 |  |  | 10,708 |  |  | 589,174 |  |  | 16,242 |  |  | 2,103,620 |  |  | 46,447 |  |  | 3,010,934 |  |  | 73,397 |
Repurchase of common stock |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |
Restricted stock issued – directors |  |  | - |  |  | - |  |  | - |  |  | - |  |  | (57,000) |  |  | (1,259) |  |  | (57,000) |  |  | (1,259) |
Exercised stock options - compensation plans |  |  | - |  |  | - |  |  | - |  |  | - |  |  | (68,785) |  |  | (1,519) |  |  | (68,785) |  |  | (1,519) |
Restricted stock units – vested |  |  | - |  |  | - |  |  | - |  |  | - |  |  | (65,358) |  |  | (1,443) |  |  | (65,358) |  |  | (1,443) |
Outstanding at December 31, 2016 |  |  | 318,140 |  |  | 10,708 |  |  | 589,174 |  |  | 16,242 |  |  | 1,912,477 |  |  | 42,226 |  |  | 2,819,791 |  |  | 69,176 |
Repurchase of common stock |  |  | - |  |  | - |  |  | 1,000 |  |  | 28 |  |  | - |  |  | - |  |  | 1,000 |  |  | 28 |
Restricted stock issued - directors |  |  | - |  |  | - |  |  | - |  |  | - |  |  | (57,000) |  |  | (1,259) |  |  | (57,000) |  |  | (1,259) |
Exercised stock options - compensation plans |  |  | - |  |  | - |  |  | - |  |  | - |  |  | (142,268) |  |  | (3,140) |  |  | (142,268) |  |  | (3,140) |
Restricted stock units - vested |  |  | - |  |  | - |  |  | - |  |  | - |  |  | (70,519) |  |  | (1,557) |  |  | (70,519) |  |  | (1,557) |
Outstanding at December 31, 2017 |  |  | 318,140 |  |  | 10,708 |  |  | 590,174 |  |  | 16,270 |  |  | 1,642,690 |  |  | 36,270 |  |  | 2,551,004 |  |  | 63,248 |
Disclosure of capital reserve [Text Block] | As of December 31, 2017 and 2016, $129,254 and $62,459, respectively, of the Bank’s retained earnings are restricted from dividend distribution for purposes of complying with local regulatory requirements.
|  | December 31, 2017 |  | December 31, 2016 |
Dynamic provision |  |  | 108,756 |  |  | 43,826 |
Regulatory reserve |  |  | 20,498 |  |  | 18,633 |
|  |  | 129,254 |  |  | 62,459 |

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