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Marketable Securities (Tables)
 9 Months Ended
Sep. 30, 2015
Investments Debt And Equity Securities [Abstract]  
Schedule of Marketable Securities

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fair value measurement level

 

Market value

 

 

Cost basis

 

 

Unrealized gain

 

 

 

 

 

(In thousands)

 

December 31, 2014

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Valhi common stock

 

1

 

$

92,131

 

 

$

24,347

 

 

$

67,784

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

September 30, 2015

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Valhi common stock

 

1

 

$

27,165

 

 

$

24,347

 

 

$

2,818