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 April 1, 2018, the remaining minimum lease and estimated adjusted common area maintenance (CAM) payments under the non-cancelable office and facility space leases are as follows: 
 Non-cancellable Operating Leases Minimum Payments 
 
 
 Total facilities rental and CAM expense for both facility lease agreements as of the three and six months ended April 1, 2018 was $174 and $341 thousand. Total expense under facility lease agreements as of the three and six months ended April 2, 2017 was $161 thousand and $327 thousand. 
 As of April 1, 2018, the unamortized deferred rent was $119 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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