Summary of Significant Accounting Policies - Concentration Risk (Details) - USD ($) $ in Millions	12 Months Ended
	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%