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v3.22.1

Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Consolidated Statements of Comprehensive Loss [Abstract] |  |
Net loss | $ (41,447) | $ (86,098)
Other comprehensive income net of tax: |  |
Pension and postretirement liability adjustments, net of tax | 6,241 | (983)
Comprehensive loss | $ (35,206) | $ (87,081)

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