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v3.21.2

Employee Benefit Plans (Details) $ in Thousands | 5 Months Ended | 6 Months Ended | 11 Months Ended
--- | --- | --- | ---
Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) plan | Dec. 31, 2020 USD ($) plan
Employee Benefit Plans |  |  |
Number of plans | plan |  | 5 | 3
Expense recognized for matching contribution | $ | $ 0 | $ 591 | $ 187
Redwire plan |  |  |
Employee Benefit Plans |  |  |
Matching contribution (in percent) | 50.00% |  | 50.00%
Roccor plan |  |  |
Employee Benefit Plans |  |  |
Matching contribution (in percent) |  | 4.00% | 100.00%
LoadPath plan |  |  |
Employee Benefit Plans |  |  |
Matching contribution (in percent) |  | 100.00% | 100.00%

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- Definition The information pertaining to number of qualified plans maintained by the company. + References No definition available. + Details
Name: | gnpk_NumberOfQualifiedPlans
Namespace Prefix: | gnpk_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_RetirementPlanNameAxis=gnpk_RedwirePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_RetirementPlanNameAxis=gnpk_RoccorPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_RetirementPlanNameAxis=gnpk_LoadpathPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |