Commitments and Contingencies  | 
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| Commitments and Contingencies Disclosure [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Commitments and Contingencies | 
 Note 4 - Commitments and Contingencies 
 Rental Payments under Non-cancellable Operating Leases 
 As of December 31, 2017, the remaining minimum lease and estimated adjusted common area maintenance (CAM) payments under the non-cancelable office and facility space leases are as follows: 
 
 
 
 
 Total facilities rental and CAM expense for both facility lease agreements as of the three months ended December 31, 2017 was $168 thousand. Total expense under facility lease agreements as of the three months ended January 1, 2017 was $166 thousand. 
 As of December 31, 2017 the unamortized deferred rent was $121 thousand as compared to $123 thousand as of October 1, 2017. Deferred rent expense is amortized monthly over the life of the lease.  | 
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