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Accounts and Other Receivables, Net (Tables)
12 Months Ended
Dec. 31, 2021
Receivables [Abstract]  
Schedule of Accounts Notes Loans and Financing Receivable

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December 31, 

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2020

    

2021

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(In thousands)

Trade receivables - CompX

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$

10,801

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$

15,616

Accrued insurance recoveries

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18

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43

Other receivables

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393

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20

Allowance for doubtful accounts

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(70)

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(70)

Total

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$

11,142

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$

15,609