Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Detail Textuals)

v2.4.1.9
Commitments and Contingencies (Detail Textuals) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Dec. 28, 2014
Commitment And Contingencies [Line Items]  
HVAC improvement allowance $ 0.35opxs_LeaseImprovementAllowance
From 1/1/14 - 3/31/14  
Commitment And Contingencies [Line Items]  
Annual base rent rate per square foot 0.00opxs_AnnualBaseRentRatePerSquareFoot
/ opxs_LeasePeriodAxis
= opxs_FromJanuary1St2014ToMarch31St2014Member
From 4/1/2014 - 3/31/2016  
Commitment And Contingencies [Line Items]  
Annual base rent rate per square foot 5.20opxs_AnnualBaseRentRatePerSquareFoot
/ opxs_LeasePeriodAxis
= opxs_Fromapril1St2014Tomarch31St2016Member
from 4/1/2016 - 3/31/2018  
Commitment And Contingencies [Line Items]  
Annual base rent rate per square foot 5.65opxs_AnnualBaseRentRatePerSquareFoot
/ opxs_LeasePeriodAxis
= opxs_Fromapril1St2016Tomarch31St2018Member
From 4/1/2018 - 3/31/2019  
Commitment And Contingencies [Line Items]  
Annual base rent rate per square foot 5.85opxs_AnnualBaseRentRatePerSquareFoot
/ opxs_LeasePeriodAxis
= opxs_FromApril1St2018ToMarch31St2019Member
From 4/1/2019 - 3/31/2021  
Commitment And Contingencies [Line Items]  
Annual base rent rate per square foot 6.05opxs_AnnualBaseRentRatePerSquareFoot
/ opxs_LeasePeriodAxis
= opxs_Fromapril1St2019Tomarch31St2021Member