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
Nov. 03, 2014
sqft
Dec. 28, 2014
Dec. 28, 2013
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   28,400us-gaap_OperatingLeasesRentExpenseNet    
Space of leased premises (in square feet) 56,633us-gaap_AreaOfLand      
Monthly minimum rent expense 30,400us-gaap_OperatingLeasesRentExpenseMinimumRentals 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   104,400us-gaap_LeaseAndRentalExpense 54,000us-gaap_LeaseAndRentalExpense  
Manufacturing and office equipment expenses   6,900opxs_ManufacturingAndOfficeEquipmentExpenses 6,000opxs_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   87,500us-gaap_DeferredRentCreditCurrent   91,000us-gaap_DeferredRentCreditCurrent
Deferred rent expense amortized per month   $ 1,200opxs_DeferredRentExpenseAmortizedPerMonth