Summary of Significant Accounting Policies - Significant Customers (Details) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
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| California | |||
| Segment Reporting Information [Line Items] | |||
| Percentage of revenues under contracts or subcontracts | 11.00% | 13.00% | 18.00% |
| NEW YORK | |||
| Segment Reporting Information [Line Items] | |||
| Percentage of revenues under contracts or subcontracts | 15.00% | ||
| Texas | |||
| Segment Reporting Information [Line Items] | |||
| Percentage of revenues under contracts or subcontracts | 10.00% | 12.00% | |
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- Definition Percentage of revenues under contracts or subcontracts. No definition available.
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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. No definition available.
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