Basis of Presentation and Summary of Significant Accounting Policies - Certain Risks and Concentrations (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
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)	17.00%	19.00%
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)			18.00%	30.00%
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)			45.00%		60.00%
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)	32.00%	27.00%	15.00%	17.00%
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)			25.00%
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)		19.00%	13.00%	33.00%
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)		17.00%		10.00%
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%
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)		36.00%	17.00%	43.00%
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)			10.00%
Commercial Building Systems Provider | 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)			12.00%
U.S. Navy Mechanical Contractor | 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)			12.00%
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%