Organization and Basis of Presentation (Details Textual)	Jun. 30, 2012
NL Industries [Member]
Organization and basis of presentation (Textual) [Abstract]
Percentage of ownership held by parent company	87.00%
Valhi [Member]
Organization and basis of presentation (Textual) [Abstract]
Percentage of ownership held by parent company	83.00%
Contran Corporation [Member]
Organization and basis of presentation (Textual) [Abstract]
Percentage of ownership held by parent company	95.00%