Annual report pursuant to Section 13 and 15(d)

Stock Based Compensation (Details 1)

v2.4.1.9
Stock Based Compensation (Details 1) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Sep. 28, 2014
Sep. 29, 2013
Sep. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Number of Shares Remaining Option, Granted 73,751,649us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross    
Number of Shares Remaining Option, Outstanding - Ending Balance 62,911,649us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber    
Incentive Stock Option Plan      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Number of Shares Remaining Option, Outstanding - Beginning Balance 48,247,649us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_PlanNameAxis
= opxs_IncentiveStockOptionPlanMember
48,477,649us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_PlanNameAxis
= opxs_IncentiveStockOptionPlanMember
 
Number of Shares Remaining Option, Granted 25,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_PlanNameAxis
= opxs_IncentiveStockOptionPlanMember
    
Number of Shares Remaining Option, Forfeited (5,336,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
/ us-gaap_PlanNameAxis
= opxs_IncentiveStockOptionPlanMember
(230,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
/ us-gaap_PlanNameAxis
= opxs_IncentiveStockOptionPlanMember
 
Number of shares remaining option, exercised (5,000,000)us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_PlanNameAxis
= opxs_IncentiveStockOptionPlanMember
    
Number of Shares Remaining Option, Outstanding - Ending Balance 62,911,649us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_PlanNameAxis
= opxs_IncentiveStockOptionPlanMember
48,247,649us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_PlanNameAxis
= opxs_IncentiveStockOptionPlanMember
48,477,649us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_PlanNameAxis
= opxs_IncentiveStockOptionPlanMember
Number of shares remaining option, exercisable 20,201,649us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_PlanNameAxis
= opxs_IncentiveStockOptionPlanMember
17,700,149us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_PlanNameAxis
= opxs_IncentiveStockOptionPlanMember
 
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]      
Weighted Average Fair Value, Outstanding - Beginning Balance        
Weighted Average Fair Value, Granted $ 0.01us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
/ us-gaap_PlanNameAxis
= opxs_IncentiveStockOptionPlanMember
    
Weighted Average Fair Value, Forfeited        
Weighted Average Fair Value, Exercised $ 0.01us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
/ us-gaap_PlanNameAxis
= opxs_IncentiveStockOptionPlanMember
    
Weighted Average Fair Value, Outstanding - Ending Balance         
Weighted Average Fair Value, Exercisable        
Share Based Compensation Arrangement By Share Based Payment Award Options Weighted Average Life [Abstract]      
Weighted Average Life (Years), Outstanding 3 years 4 months 28 days 3 years 6 months 22 days 4 years 6 months 22 days
Weighted Average Life (Years) Granted 5 years 2 months 19 days    
Weighted Average Life (Years) Exercisable 1 year 9 months 3 days 2 years 9 months  
Share Based Compensation Arrangement By Share Based Payment Award Options Aggregate Value [Roll Forward]      
Aggregate Value, Outstanding - Beginning Balance        
Aggregate Value, Granted 200opxs_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodTotalAggregateValue
/ us-gaap_PlanNameAxis
= opxs_IncentiveStockOptionPlanMember
    
Aggregate Value, Forfeited        
Aggregate Value, Exercised        
Aggregate Value, Outstanding - Ending Balance         
Aggregate Value, Exercisable