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Commitments and Contingencies (Narrative) (Details) - USD ($) | 3 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Dec. 31, 2016 | Dec. 31, 2015 | Oct. 31, 2017 | Jul. 31, 2017 | Jan. 31, 2017 | Dec. 31, 2014
Rent expense under operating leases |  |  | $ 227,000 | $ 192,000 |  |  |  |
Minimum payment commitment | $ 105,000 |  | 105,000 |  |  |  |  |
NRM VII Holdings [Member] |  |  |  |  |  |  |  |
Cash paid for legal settlement | 2,000,000 |  |  |  |  |  |  |
Payments of accrued dividends |  | $ 914,000 |  |  |  |  |  |
Total payable to insurance carrier | 914,000 |  | 914,000 |  |  |  |  |
Remaining balance of note payable | 803,000 |  | 803,000 |  |  |  |  |
Payment of note payable | 100,000 |  | 100,000 |  |  |  |  |
NRM VII Holdings [Member] | Scenario, Forecast [Member] |  |  |  |  |  |  |  |
Payment of note payable |  |  |  |  | $ 305,000 | $ 305,000 |  |
NRM VII Holdings [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |
Payment of note payable |  |  |  |  |  |  | $ 205,000 |
Virginia Biotech Research Partnership Laboratory [Member] |  |  |  |  |  |  |  |
Minimum payment commitment | 14,000 |  | 14,000 | 14,000 |  |  |  |
Savills Studley San Diego Office Space [Member] |  |  |  |  |  |  |  |
Minimum payment commitment | 6,000 |  | 6,000 | 6,000 |  |  |  |
Avtotehna [Member] |  |  |  |  |  |  |  |
Minimum payment commitment | $ 81,000 |  | $ 81,000 | 81,000 |  |  |  |
Lease expiration date |  |  | Feb. 01, 2019 |  |  |  |  |
Monthly rental expense |  |  | $ 3,128 | $ 3,128 |  |  |  |
Leasehold improvements |  |  |  |  |  |  |  | $ 185,000

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