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Basis of Presentation and Summary of Significant Accounting Policies - Certain Risks and Concentrations (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Total Expenditures | Supplier concentration risk | Offshore Supplier
Concentration Risk [Line Items]
Concentration risk (less than for geographic concentration risk for the three months ended June 30, 2022)		39.00%	19.00%	32.00%
Total Expenditures | Supplier concentration risk | Offshore Supplier One
Concentration Risk [Line Items]
Concentration risk (less than for geographic concentration risk for the three months ended June 30, 2022)	19.00%
Total Expenditures | Supplier concentration risk | Offshore Supplier Two
Concentration Risk [Line Items]
Concentration risk (less than for geographic concentration risk for the three months ended June 30, 2022)	10.00%
Accounts Payable | Supplier concentration risk | Offshore Supplier
Concentration Risk [Line Items]
Concentration risk (less than for geographic concentration risk for the three months ended June 30, 2022)			53.00%		60.00%
Distributor To The U.S. Navy | Revenue | Customer concentration risk
Concentration Risk [Line Items]
Concentration risk (less than for geographic concentration risk for the three months ended June 30, 2022)	22.00%	30.00%	18.00%	41.00%
Shipbuilder For U.S. Navy | Revenue | Customer concentration risk
Concentration Risk [Line Items]
Concentration risk (less than for geographic concentration risk for the three months ended June 30, 2022)			12.00%
Shipbuilder For U.S. Navy | Accounts receivable | Customer concentration risk
Concentration Risk [Line Items]
Concentration risk (less than for geographic concentration risk for the three months ended June 30, 2022)		36.00%
Commercial Building Systems Provider | Revenue | Customer concentration risk
Concentration Risk [Line Items]
Concentration risk (less than for geographic concentration risk for the three months ended June 30, 2022)	13.00%
Distributor To The U.S. Navy Combined With Sales To Shipbuilders | Revenue | Customer concentration risk
Concentration Risk [Line Items]
Concentration risk (less than for geographic concentration risk for the three months ended June 30, 2022)	24.00%	35.00%	31.00%	47.00%
Regional Commercial Lighting Retrofit Company | Revenue | Customer concentration risk
Concentration Risk [Line Items]
Concentration risk (less than for geographic concentration risk for the three months ended June 30, 2022)	14.00%	10.00%	12.00%	11.00%
Regional Commercial Lighting Retrofit Company | Accounts receivable | Customer concentration risk
Concentration Risk [Line Items]
Concentration risk (less than for geographic concentration risk for the three months ended June 30, 2022)			17.00%
Distributor To The U.S. Department Of Defense | Accounts receivable | Customer concentration risk
Concentration Risk [Line Items]
Concentration risk (less than for geographic concentration risk for the three months ended June 30, 2022)					20.00%
Commercial Building Systems Provider One | Accounts receivable | Customer concentration risk
Concentration Risk [Line Items]
Concentration risk (less than for geographic concentration risk for the three months ended June 30, 2022)	34.00%
Commercial Building Systems Provider Two | Accounts receivable | Customer concentration risk
Concentration Risk [Line Items]
Concentration risk (less than for geographic concentration risk for the three months ended June 30, 2022)	14.00%

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