Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands |
Dec. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Deferred tax assets | ||
| Leases | $ 233 | $ 319 |
| Employee benefits | 1,208 | 1,471 |
| Accrued losses on uncompleted contracts | 2,572 | 3,015 |
| Stock based compensation expense | 247 | 225 |
| Federal net operating losses | 21,724 | 19,345 |
| State net operating losses | 3,299 | 3,620 |
| R&D and other tax credits | 938 | 806 |
| Other | 545 | 398 |
| Total deferred tax assets | 30,766 | 29,199 |
| Deferred tax liabilities | ||
| Property, plant and equipment and AHFS | (1,285) | (2,632) |
| Prepaid insurance | (231) | (511) |
| Total deferred tax liabilities | (1,516) | (3,143) |
| Net deferred tax assets | 29,250 | 26,056 |
| Valuation allowance | (29,331) | (26,168) |
| Net deferred taxes | $ (81) | $ (112) |
| X | ||||||||||
- Definition Deferred tax assets, Accrued losses on uncompleted contracts. No definition available.
|
| X | ||||||||||
- Definition Deferred tax assets leases. No definition available.
|
| X | ||||||||||
- Definition Deferred tax assets (liabilities), gross. No definition available.
|
| X | ||||||||||
- Definition Deferred tax liabilities, Property plant and equipment and asset held for sale. No definition available.
|
| X | ||||||||||
- Definition Amount of deferred tax liability attributable to taxable temporary differences. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible research tax credit carryforwards. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from employee benefits, classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of deferred tax consequences attributable to taxable temporary differences derived from prepaid expenses. No definition available.
|