| Marketable Securities [Table Text Block] |
| | | | | | | | | | | | | | | | | | | | Equity instruments | | $ | 33,310 | | | $ | 2,518 | | | $ | (322 | ) | | $ | 35,506 | | | Preferred stock | | | 59,967 | | | | 4,276 | | | | (9 | ) | | | 64,234 | | | Trust preferred securities | | | 3,147 | | | | 91 | | | | - | | | | 3,238 | | | Exchange traded debt instruments | | | 7,679 | | | | 354 | | | | (2 | ) | | | 8,031 | | | | | $ | 104,103 | | | $ | 7,239 | | | $ | (333 | ) | | $ | 111,009 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Equity instruments | | $ | 10,825 | | | $ | 44 | | | $ | (711 | ) | | $ | 10,158 | | | Preferred stock | | | 37,703 | | | | 2,419 | | | | (122 | ) | | | 40,000 | | | Trust preferred securities | | | 16,464 | | | | 1,303 | | | | (66 | ) | | | 17,701 | | | Exchange traded debt instruments | | | 6,511 | | | | 297 | | | | - | | | | 6,808 | | | | | $ | 71,503 | | | $ | 4,063 | | | $ | (899 | ) | | $ | 74,667 | | |