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Accounts Payable and Accrued Expenses (Tables) | 12 Months Ended
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Dec. 31, 2015
Accounts Payable and Accrued Liabilities, Current [Abstract] |
Accounts Payable and Accrued Expenses / Costs | Accounts payable and accrued expenses consist of the following at December 31, 2015 and 2014 (in thousands):
|  | 2015 |  | 2014
Payroll and other employee benefits |  | $ | 576 |  |  | $ | 1,481 |
Accrued vacation |  | 701 |  |  | 806 |
Accrued legal expenses - patent |  | 10,135 |  |  | 8,410 |
Accrued attorney's fees |  | — |  |  | 1,548 |
Foreign taxes payable (1) |  | 3,960 |  |  | — |
Accrued consulting and other professional fees |  | 1,592 |  |  | 1,530 |
Other accrued liabilities |  | 383 |  |  | 1,085 |
|  | $ | 17,347 |  |  | $ | 14,860 |
(1) - Included in "Accounts Payable and Accrued Expenses/Patent Costs" line item on the consolidated statement of cash flows included elsewhere herein.

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- Definition Tabular disclosure of the (a) carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business (accounts payable); (b) other payables; and (c) accrued liabilities. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). An alternative caption includes accrued expenses. + References No definition available. + Details
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