Construction Contract and Other Service Revenues - Percentage of Revenue (Details) |
12 Months Ended | ||
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Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
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| Construction contract revenue | Revenue from Contract with Customer Benchmark | Concentration risk | United States Government | |||
| Concentration Risk [Line Items] | |||
| Percentage of revenue | 88.00% | 90.00% | 79.00% |
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- Definition 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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