Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies (Detail Textuals)

v2.4.1.9
Commitments and Contingencies (Detail Textuals) (USD $)
In Millions, unless otherwise specified
 0 Months Ended
Dec. 10, 2013
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 - 3/31/2018  
Commitment And Contingencies [Line Items]  
Annual base rent rate per square foot 5.45opxs_AnnualBaseRentRatePerSquareFoot
/ opxs_LeasePeriodAxis
= opxs_FromApril1St2014ToMarch31St2018Member
From 4/1/2018 - 3/31/2019  
Commitment And Contingencies [Line Items]  
Annual base rent rate per square foot 5.65opxs_AnnualBaseRentRatePerSquareFoot
/ opxs_LeasePeriodAxis
= opxs_FromApril1St2018ToMarch31St2019Member
From 4/1/2019 - 3/31/2020  
Commitment And Contingencies [Line Items]  
Annual base rent rate per square foot 5.85opxs_AnnualBaseRentRatePerSquareFoot
/ opxs_LeasePeriodAxis
= opxs_FromApril1St2019ToMarch31St2020Member
From 4/1/2020 - 3/31/2021  
Commitment And Contingencies [Line Items]  
Annual base rent rate per square foot 6.05opxs_AnnualBaseRentRatePerSquareFoot
/ opxs_LeasePeriodAxis
= opxs_FromApril1St2020ToMarch31St2021Member