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Organization and Summary of Significant Accounting Policies - Additional Information (Details) | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2021 USD ($) segment | Dec. 31, 2020 USD ($) | Dec. 01, 2021 USD ($) | Sep. 30, 2021 USD ($) | Jun. 30, 2021 USD ($) | Mar. 31, 2021 USD ($) | Jan. 01, 2020 USD ($)
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Number of operating segments | segment | 2 |  |  |  |  |  |
Number of corporate non-operating segments | segment | 1 |  |  |  |  |  |
Retained earnings | $ (12,987,000) | $ 9,181,000 |  | $ (6,797,000) | $ (12,185,000) | $ (9,356,000) |
Short-term investments | $ 0 |  |  |  |  |  |
Intangible assets, useful life | 7 years |  |  |  |  |  |
Prepaid contract costs | $ 0 | 0 |  |  |  |  |
Other (income) expense, net |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Charges for damage | 3,800,000 |  |  |  |  |  |
Gain on settlement of contract dispute for project completed in 2015 |  | 10,000,000.0 |  |  |  |  |
Other (income) expense, net | Hurricane Laura |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Charges related to damage caused by landfall |  | 800,000 |  |  |  |  |
DSS Acquisition |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Business acquisition, transaction costs | $ 500,000 |  | $ 500,000 |  |  |  |
Minimum |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Property, plant and equipment, useful life | 3 years |  |  |  |  |  |
Maximum |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Property, plant and equipment, useful life | 25 years |  |  |  |  |  |
LC Facility |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Restricted cash | $ 1,700,000 | 0 |  |  |  |  |
LC Facility | Balance Sheet Date Classified as Current |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Maturity date, description | maturity dates of twelve months or less from the balance sheet date classified as current |  |  |  |  |  |
LC Facility | Balance Sheet Date Classified as Noncurrent |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Maturity date, description | maturity dates of longer than twelve months from the balance sheet date classified as noncurrent |  |  |  |  |  |
Corrections |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Retained earnings |  | $ (1,886,000) |  | $ (1,584,000) | $ (1,660,000) | $ (1,782,000) | $ (1,800,000)

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