Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Narrative (Details)

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Fair Value Measurements - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Unrealized gain (loss) included in OCI $ 0  
Asset impairment 233,000 $ 6,214,000
Inventory, net realizable value $ 103,249,000 85,080,000
Fair Value, Recurring | Palmerof Texas Tanks Inc    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Inventory, net realizable value   2,100,000
Long-lived assets, fair value   1,400,000
Asset impairments   $ 6,200,000