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Accounts and other receivables, net (Tables)
3 Months Ended
Mar. 31, 2013
Receivables [Abstract]  
Schedule of Accounts Notes Loans and Financing Receivable
     December 31,
2012
    March 31,
2013
 
     (In thousands)  

Trade receivables—CompX

   $ 8,696      $ 9,744   

Promissory note receivable

     3,034        1,206   

Accrued insurance recoveries

     476        847   

Affiliate receivables—taxes

     —          881   

Other receivables

     51        64   

Refundable income taxes

     8        4   

Allowance for doubtful accounts

     (216     (216
  

 

 

   

 

 

 

Total

   $ 12,049      $ 12,530