Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details Narrative)

v3.8.0.1
Income Taxes (Details Narrative) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Deferred tax assets net operating loss carry forward $ 15,003       $ 20,633       $ 15,003 $ 20,633  
Ownership change, description                 In general, an ownership change, as defined by Section 382 and 383, results from transactions increasing ownership of certain stockholders or public groups in the stock of the corporation by more than 50 percentage points over a three-year period.    
Unrecognized income tax benefits 13               $ 13    
U.S. corporate income tax rate                 35.00%    
Reduction of U.S. corporate income tax rate                 21.00%    
Income tax expense benefit 6,880 $ 29,394 $ (6,880) $ (29,394) $ (15,248)
Offset Income tax expense                 8,300    
Interest related to Unrecognized tax benefits or penalties                    
Indefinite-lived Intangible Assets [Member]                      
Income tax expense benefit                 6,600    
Unclassified Indefinite-lived Intangible Assets [Member]                      
Income tax expense benefit                 8,300    
Federal [Member]                      
Deferred tax assets net operating loss carry forward 61,700               $ 61,700    
Net operating loss carry forward, expiration                 2026    
Deferred research tax credit carryforwards 1,600               $ 1,600    
California [Member]                      
Deferred tax assets net operating loss carry forward 35,800               $ 35,800    
Net operating loss carry forward, expiration                 2028    
Deferred research tax credit carryforwards $ 300               $ 300