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Summary of Significant Accounting Policies - Concentration Risk (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Concentration Risk [Line Items] |  |
Prepaid supplies | $ 0.6 | $ 0.7
Total Expenditures | Supplier Concentration Risk | Offshore Supplier |  |
Concentration Risk [Line Items] |  |
Concentration risk | 16.00% | 29.00%
Accounts Payable | Supplier Concentration Risk | Offshore Supplier |  |
Concentration Risk [Line Items] |  |
Concentration risk | 36.00% | 60.00%
Two Customers | Accounts receivable | Customer concentration risk |  |
Concentration Risk [Line Items] |  |
Concentration risk | 27.00% | 43.00%
Distributor To The U.S. Navy | Accounts receivable | Customer concentration risk |  |
Concentration Risk [Line Items] |  |
Concentration risk | 13.00% | 30.00%
Regional Commercial Lighting Retrofit Company | Accounts receivable | Customer concentration risk |  |
Concentration Risk [Line Items] |  |
Concentration risk | 14.00% | 13.00%
Distributor To U.S. Navy Combined With Sales To Shipbuilders | Accounts receivable | Customer concentration risk |  |
Concentration Risk [Line Items] |  |
Concentration risk | 30.00% |
Distributor To U.S. Navy Combined With Sales To Shipbuilders | Net sales | Customer concentration risk |  |
Concentration Risk [Line Items] |  |
Concentration risk | 30.00% | 38.00%
Distributor To The U.S. Department Of Defense | Accounts receivable | Customer concentration risk |  |
Concentration Risk [Line Items] |  |
Concentration risk | 25.00% | 20.00%
Shipbuilder For U.S. Navy | Accounts receivable | Customer concentration risk |  |
Concentration Risk [Line Items] |  |
Concentration risk |  | 36.00%

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