Commitments and Contingencies (Details) $ in Thousands  | 
 Dec. 31, 2017  
USD ($) 
 | 
|---|---|
| Fiscal Year | |
| 2018 | $ 511 | 
| 2019 | 700 | 
| 2020 | 720 | 
| 2021 | 529 | 
| 2022 | 27 | 
| Total minimum lease payments | 2,487 | 
| Optex Systems (OPX) - Richardson, Texas [Member] | Lease Payments [Member] | |
| Fiscal Year | |
| 2018 | 205 | 
| 2019 | 281 | 
| 2020 | 291 | 
| 2021 | 147 | 
| 2022 | |
| Total minimum lease payments | 924 | 
| Optex Systems (OPX) - Richardson, Texas [Member] | Common Area Maintenance Estimate [Member] | |
| Fiscal Year | |
| 2018 | 81 | 
| 2019 | 110 | 
| 2020 | 112 | 
| 2021 | 57 | 
| 2022 | |
| Total minimum lease payments | 360 | 
| Applied Optics Center (AOC) - Dallas [Member] | Lease Payments [Member] | |
| Fiscal Year | |
| 2018 | 180 | 
| 2019 | 248 | 
| 2020 | 255 | 
| 2021 | 262 | 
| 2022 | 22 | 
| Total minimum lease payments | 967 | 
| Applied Optics Center (AOC) - Dallas [Member] | Common Area Maintenance Estimate [Member] | |
| Fiscal Year | |
| 2018 | 45 | 
| 2019 | 61 | 
| 2020 | 62 | 
| 2021 | 63 | 
| 2022 | 5 | 
| Total minimum lease payments | $ 236 | 
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- Definition Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- References No definition available. 
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- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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