Quarterly report [Sections 13 or 15(d)]

Schedule of Assumptions and Results for the Monte Carlo Simulation for the Performance Shares (Details)

v3.25.1
Schedule of Assumptions and Results for the Monte Carlo Simulation for the Performance Shares (Details)
$ / shares in Units, $ in Thousands
 6 Months Ended
Mar. 30, 2025
USD ($)
$ / shares
shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Performance period start Oct. 02, 2023
Performance period end Oct. 01, 2028
Term of simulation 5 years 5 months 1 day [1]
Time steps in simulation 1,365
Time steps per year 252
Common share price at valuation date $ 3.04 [2]
Dividend yield 0.00% [3]
Volatility (annual) 50.00% [4]
Risk-free rate (annual) 3.37% [5]
Cost of equity 11.50% [6]
Share-Based Payment Arrangement, Tranche One [Member]  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Number of performance shares in the tranche | shares 27,000 [1]
Derived service period 8 months 15 days [7]
Fair value of one performance share $ 2.75 [7]
Total fair value of tranche | $ $ 74,345
Share-Based Payment Arrangement, Tranche Two [Member]  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Number of performance shares in the tranche | shares 27,000 [1]
Derived service period 1 year 1 month 17 days [7]
Fair value of one performance share $ 2.58 [7]
Total fair value of tranche | $ $ 69,742
Share-Based Payment Arrangement, Tranche Three [Member]  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Number of performance shares in the tranche | shares 27,000 [1]
Derived service period 1 year 7 months 6 days [7]
Fair value of one performance share $ 2.39 [7]
Total fair value of tranche | $ $ 64,446
Share Based Compensation Award Tranche Four [Member]  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Number of performance shares in the tranche | shares 27,000 [1]
Derived service period 2 years 21 days [7]
Fair value of one performance share $ 2.18 [7]
Total fair value of tranche | $ $ 58,819
Share Based Compensation Award Tranche Five [Member]  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Number of performance shares in the tranche | shares 27,000 [1]
Derived service period 2 years 5 months 23 days [7]
Fair value of one performance share $ 1.93 [7]
Total fair value of tranche | $ $ 52,238
[1] Based on the terms of the Performance Shares agreement issued by the Company on May 3, 2023.
[2] Closing price of OPXS shares on the Valuation Date, as obtained via S&P Capital IQ.
[3] Expected dividends provided by management.
[4] Based on historical volatility of OPXS and comparable public companies.
[5] Interest rate for US Treasury commensurate with the Performance Shares holding period, as of the Valuation Date, as obtained via S&P Capital IQ.
[6] Estimated cost of equity for OPXS as of the Valuation Date.
[7] Based on Monte Carlo simulation.