| Fair Value, by Balance Sheet Grouping [Table Text Block] |
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| | | | | | | | | | | | | | | | | | | | | Cash and cash equivalents: | | | | | | | | | | | | | | | | | | | | | |
| | $ | 3,039 | | | $ | 3,039 | | | $ | 3,039 | | | $ | - | | | $ | - | | |
| | | - | | | | - | | | | - | | | | - | | | | - | | | | | $ | 3,039 | | | $ | 3,039 | | | $ | 3,039 | | | $ | - | | | $ | - | | |
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| | $ | 676 | | | $ | 676 | | | $ | 676 | | | $ | - | | | $ | - | | |
| | | | | | | | | | | | | | | | | | | | | Contingent consideration: | | | | | | | | | | | | | | | | | | | | | |
| | $ | 4,507 | | | $ | 4,507 | | | $ | - | | | $ | - | | | $ | 4,507 | | |
| | | 14,409 | | | | 14,409 | | | | - | | | | - | | | | 14,409 | | | | | $ | 18,916 | | | $ | 18,916 | | | $ | - | | | $ | - | | | $ | 18,916 | | | | |
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| | | | | | | | | | | | | | | | | | | | | Cash and cash equivalents: | | | | | | | | | | | | | | | | | | | | | |
| | $ | 7,534 | | | $ | 7,534 | | | $ | 7,534 | | | $ | — | | | $ | — | | |
| | | 776 | | | | 776 | | | | 776 | | | | — | | | | — | | | | | $ | 8,310 | | | $ | 8,310 | | | $ | 8,310 | | | $ | — | | | $ | — | | |
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| | $ | 48 | | | $ | 48 | | | $ | 48 | | | $ | — | | | $ | — | | |
| | | 58 | | | | 58 | | | | 58 | | | | — | | | | — | | |
| | | 1,115 | | | | 1,115 | | | | 1,115 | | | | — | | | | — | | Government agency securities | | | 131 | | | | 131 | | | | 131 | | | | — | | | | — | | | | | $ | 1,352 | | | $ | 1,352 | | | $ | 1,352 | | | $ | — | | | $ | — | | |
| | | | | | | | | | | | | | | | | | | | | Contingent consideration: | | | | | | | | | | | | | | | | | | | | | |
| | $ | 4,628 | | | $ | 4,628 | | | $ | — | | | $ | — | | | $ | 4,628 | | |
| | | 13,921 | | | | 13,921 | | | | — | | | | — | | | | 13,921 | | | | | $ | 18,549 | | | $ | 18,549 | | | $ | — | | | $ | — | | | $ | 18,549 | | |