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11. INCOME TAXES (Details Narrative) - USD ($) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Net operating loss carryforward | $ 231,629 |  |  |
Unrecognized tax benefits | 3,861 | $ 94 | $ 3,761 | $ 3,970
Federal [Member] |  |  |  |
Net operating loss carryforward | $ 231,600 |  |  |
Operating loss ending expiration date | Dec. 31, 2036 |  |  |
California [Member] |  |  |  |
Net operating loss carryforward | $ 160,500 |  |  |
Operating loss ending expiration date | Dec. 31, 2036 |  |  |

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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 + Details
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