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4. Accrued Expenses (Tables) | 12 Months Ended
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Dec. 31, 2019
Payables and Accruals [Abstract] |
Schedule of accrued expenses |
|  | 2019 |  |  | 2018 |
|  | (In thousands) |
Accrued litigation liabilities |  | $ | 6,181 |  |  | $ | 3,803 |
Accrued consulting and other professional fees |  |  | 470 |  |  |  | – |
Foreign taxes payable |  |  | – |  |  |  | 374 |
State income taxes payable |  |  | 27 |  |  |  | – |
Short-term lease liability |  |  | 435 |  |  |  | – |
Other accrued liabilities |  |  | 152 |  |  |  | 122 |
|  | $ | 7,265 |  |  | $ | 4,299 |

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