| UNAUDITED CONDENSED QUARTERLY FINANCIAL DATA [Text Block] |
The following is an unaudited summary of our quarterly financial results: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Quarters ended | Mar 31 | | Jun 30 | | Sep 30 | | Dec 31 | | | | | | | | | | | | | 2013 | | | | | | | | | | Net premiums earned | $ | 874,039 |
| | $ | 945,873 |
| | $ | 945,242 |
| | $ | 941,911 |
| | | Net investment income | 108,908 |
| | 83,112 |
| | 103,429 |
| | 113,863 |
| | | Net realized investment gains (losses) | 44,478 |
| | 16,235 |
| | (4,708 | ) | | 19,558 |
| | | Underwriting income | 170,799 |
| | 9,921 |
| | 153,088 |
| | 94,159 |
| | | Net income available to common shareholders | 302,816 |
| | 72,447 |
| | 137,121 |
| | 171,524 |
| | | Earnings per common share - basic | $ | 2.59 |
| | $ | 0.63 |
| | $ | 1.23 |
| | $ | 1.55 |
| | | Earnings per common share - diluted | $ | 2.55 |
| | $ | 0.62 |
| | $ | 1.21 |
| | $ | 1.52 |
| | | | | | | | | | | | | 2012 | | | | | | | | | | Net premiums earned | $ | 846,362 |
| | $ | 850,603 |
| | $ | 862,447 |
| | $ | 856,049 |
| | | Net investment income | 116,023 |
| | 74,449 |
| | 103,638 |
| | 86,847 |
| | | Net realized investment gains | 14,491 |
| | 30,405 |
| | 50,803 |
| | 31,771 |
| | | Underwriting income (loss) | 62,689 |
| | 119,739 |
| | 154,999 |
| | (74,291 | ) | | | Net income (loss) available to common shareholders | 121,997 |
| | 168,152 |
| | 223,407 |
| | (18,551 | ) | | | Earnings (loss) per common share - basic | $ | 0.97 |
| | $ | 1.36 |
| | $ | 1.84 |
| | $ | (0.16 | ) | | | Earnings (loss) per common share - diluted | $ | 0.96 |
| | $ | 1.35 |
| | $ | 1.82 |
| | $ | (0.16 | ) | | | | | | | | | | | |
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