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Segment Reporting - Additional Information (Details) - segment	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Number of reportable segments	2
Customer Concentration Risk | Sales Revenue, Net | U.S. Government | Government Operations
Segment Reporting Information [Line Items]
Concentration risk percentage	93.00%	94.00%	95.00%
Customer Concentration Risk | Sales Revenue, Net | Utility Customers | Commercial Operations
Segment Reporting Information [Line Items]
Concentration risk percentage	77.00%	74.00%	75.00%

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
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-Section 50
-Paragraph 18
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-URI https://asc.fasb.org//1943274/2147482810/280-10-50-18

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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

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