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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Schedule Of Significant Accounting Policies [Line Items] |  |  |
Total number of weeks in a fiscal year | 52 | 52 | 52
Depreciation | $ 3.2 | $ 3.1 | $ 3.5
Defined Contribution Plan, Cost Recognized | 2.0 | 1.8 | 1.7
Income tax payments to NL | $ 14.1 | $ 1.2 | $ 3.7
Weighted average number of outstanding stock options excluded from calculation of diluted earnings per share | 0 | 0 | 9,200
Building | Minimum |  |  |
Schedule Of Significant Accounting Policies [Line Items] |  |  |
Property and equipment, estimated useful lives | 15 years |  |
Building | Maximum |  |  |
Schedule Of Significant Accounting Policies [Line Items] |  |  |
Property and equipment, estimated useful lives | 40 years |  |
Equipment and software | Minimum |  |  |
Schedule Of Significant Accounting Policies [Line Items] |  |  |
Property and equipment, estimated useful lives | 3 years |  |
Equipment and software | Maximum |  |  |
Schedule Of Significant Accounting Policies [Line Items] |  |  |
Property and equipment, estimated useful lives | 20 years |  |
NL |  |  |
Schedule Of Significant Accounting Policies [Line Items] |  |  |
Percentage of ownership held by parent company | 87.00% |  |
NL | Valhi Inc |  |  |
Schedule Of Significant Accounting Policies [Line Items] |  |  |
Percentage of ownership held by parent company | 83.00% |  |
Contran Corporation |  |  |
Schedule Of Significant Accounting Policies [Line Items] |  |  |
Ownership of combine voting stock | 5.00% |  |
Contran Corporation | Valhi Inc |  |  |
Schedule Of Significant Accounting Policies [Line Items] |  |  |
Percentage of ownership held by parent company | 94.00% |  |

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Antidilution -URI http://asc.fasb.org/extlink&oid=6505113 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Diluted Earnings Per Share -URI http://asc.fasb.org/extlink&oid=6510752 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Contingent Stock Agreement -URI http://asc.fasb.org/extlink&oid=6508534 + Details
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