| BASIC AND DILUTED EARNINGS PER COMMON SHARE [Table Text Block] |
| | | | | | | | | | | | | | | | | | | | | | | | At and year ended December 31, | 2013 | | 2012 | | 2011 | | | | | | | | | | | Basic earnings per common share | | | | | | | | Net income | $ | 727,465 |
| | $ | 547,241 |
| | $ | 46,305 |
| | | Less: preferred share dividends | 40,474 |
| | 38,228 |
| | 36,875 |
| | | Less: loss on repurchase of preferred shares | 3,081 |
| | 14,009 |
| | — |
| | | Net income available to common shareholders | 683,910 |
| | 495,004 |
| | 9,430 |
| | | Weighted average common shares outstanding - basic | 113,636 |
| | 122,148 |
| | 122,499 |
| | | Basic earnings per common share | $ | 6.02 |
| | $ | 4.05 |
| | $ | 0.08 |
| | | | | | | | | | | Diluted earnings per common share | | | | | | | | Net income available to common shareholders | $ | 683,910 |
| | $ | 495,004 |
| | $ | 9,430 |
| | | | | | | | | | | Weighted average common shares outstanding - basic | 113,636 |
| | 122,148 |
| | 122,499 |
| | | Warrants | — |
| | — |
| | 4,292 |
| | | Stock compensation plans | 1,692 |
| | 1,506 |
| | 1,331 |
| | | Weighted average common shares outstanding - diluted | 115,328 |
| | 123,654 |
| | 128,122 |
| | | Diluted earnings per common share | $ | 5.93 |
| | $ | 4.00 |
| | $ | 0.07 |
| | | | | | | | | | | Anti-dilutive shares excluded from the dilutive computation | 250 |
| | 614 |
| | 1,134 |
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