| Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] |
| | | | | | | | | | | | | | | | | | | | | | | Financial assets | | | | | | | | | | | | | | | | | | Cash equivalents (Level 1) | | $ | 5,398,000 | | | $ | 5,398,000 | | | $ | 64,000 | | | $ | 64,000 | | | Investments in equity securities (Level 1) | | | 8,111,000 | | | | 8,111,000 | | | | 8,136,000 | | | | 8,136,000 | | | Available-for-sale debt securities (Level 2) | | | 55,692,000 | | | | 55,692,000 | | | | 56,123,000 | | | | 56,123,000 | | | Consumer receivables acquired for liquidation (Level 3) | | | 1,193,000 | | | | 26,154,000 | | | | 1,668,000 | | | | 25,783,000 | | |