Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Detail Textuals 1)

v2.4.1.9
Commitments and Contingencies (Detail Textuals 1) (USD $)
0 Months Ended 3 Months Ended 6 Months Ended
Nov. 03, 2014
sqft
Mar. 30, 2014
Mar. 29, 2015
Sep. 28, 2014
Commitments and Contingencies Disclosure [Abstract]        
Lease expiration date Sep. 30, 2016      
Base rent payment per month $ 23,800us-gaap_PaymentsForRent   $ 21,200us-gaap_PaymentsForRent  
Additional operating lease rent expense 6,600opxs_AdditionalLeaseAndRentalExpense   7,200opxs_AdditionalLeaseAndRentalExpense  
Total monthly rental expense 30,400us-gaap_OperatingLeasesRentExpenseNet   28,400us-gaap_OperatingLeasesRentExpenseNet  
Space of leased premises (in square feet) 56,633us-gaap_AreaOfLand      
Monthly minimum rent expense     506,000us-gaap_OperatingLeasesRentExpenseMinimumRentals  
Operating lease renewal term 5 years      
Area of land under sublease 12,000opxs_AreaOfLandUnderSublease      
Sublease and rental expense 5,100opxs_SubleaseAndRentalExpense      
Additional sublease and rental expense 2,800opxs_AdditionalSubleaseAndRentalExpense      
Operating leases, rent expense   254,000us-gaap_LeaseAndRentalExpense 149,600us-gaap_LeaseAndRentalExpense  
Manufacturing and office equipment expenses   10,900opxs_ManufacturingAndOfficeEquipmentExpenses 4,000opxs_ManufacturingAndOfficeEquipmentExpenses  
Operating Lease Combined Rental Expenses     578,000opxs_OperatingLeaseCombinedRentalExpenses  
Estimated common area maintenance costs     166,000opxs_EstimatedCommonAreaMaintenanceCosts  
Sublease rental receipts     94,000us-gaap_OperatingLeasesRentExpenseSubleaseRentals1  
Increase decrease in lease expenses and associated common area maintenance expenses     271,000opxs_IncreaseDecreaseInLeaseExpensesAndAssociatedCommonAreaMaintenanceExpenses  
Total value of rent abatement     63,500opxs_TotalValueOfRentAbatement  
Unamortized deferred rent     84,000us-gaap_DeferredRentCreditCurrent 91,000us-gaap_DeferredRentCreditCurrent
Deferred rent expense amortized per month     $ 1,200opxs_DeferredRentExpenseAmortizedPerMonth