Entity wide revenue by major customer percent greater than ten.

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Number of environmental remediation sites without reasonably estimable costs.

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Number of environmental remediation sites with reasonably estimable costs.

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Payments for environmental loss contingencies.

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Payments for environmental loss contingencies two thousand fourteen.

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Proceeds from real estate property under settlement agreement.

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- Definition

Total costs accrued as of the balance sheet date for environmental loss contingencies.

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-Name Accounting Standards Codification

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Rate applied to the undiscounted amount of environmental loss contingencies to arrive at the present value recorded as of the balance sheet date.

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Undiscounted amount of the accrual for environmental loss contingencies.

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The aggregate amount disbursed during the reporting period to settle environmental loss contingencies.

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Undiscounted amount of the accrual for environmental loss contingencies expected to be paid in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Undiscounted amount of the accrual for environmental loss contingencies expected to be paid in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Undiscounted amount of the accrual for environmental loss contingencies expected to be paid in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

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Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

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The number of claims settled and dismissed during the period.

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Number of plaintiffs that have filed claims pertaining to a loss contingency.

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Number of pending claims pertaining to a loss contingency.

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States when the existing condition, situation, or set of circumstances involving uncertainty occurred.

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The estimated maximum amount of possible loss from the contingency.

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Commitments and Contingencies - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended			3 Months Ended
	May 31, 2012	Dec. 31, 2014 Cases Plaintiff site	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2011
Loss Contingencies [Line Items]
Number of cases administratively dismissed or inactive		100
Liable periods		twenty-year
Litigation settlement amount		$ 1,150,000,000us-gaap_LitigationSettlementAmount		$ 14,964,000us-gaap_LitigationSettlementAmount
Net Payments, net		10,106,000	3,299,000	8,098,000
Payments		2,900,000
Aggregate amount of payments		6,000,000
Amount due in 2012		2,000,000
Amount due in 2013		1,000,000
Amount due in 2014		2,900,000
Discount rate		3.00%
Prepayments during 2014		1,900,000
Accrued environmental obligations approximately		110,015,000	113,636,000	48,006,000		41,637,000
Sites associated with remediation		47
Remediation and related matters possible to estimate costs		149,000,000
Currently not able to estimate a range of costs to sites		5
Aggregate cash received under settlement agreement	15,600,000
Litigation settlement gain				14,964,000
Number of cases pending		186
Number of Plaintiffs Involved in Pending Cases		736
Customer Concentration Risk \| Sales Revenue
Loss Contingencies [Line Items]
Customers accounted		47.00%	42.00%	38.00%
Other Litigation
Loss Contingencies [Line Items]
Number of cases administratively dismissed or inactive		8,692
NL \| Proceeds From Real Estate Related Litigation Settlement
Loss Contingencies [Line Items]
Litigation settlement gain					$ 15,000,000
Harley Davidson Inc \| CompX Security Products Business
Loss Contingencies [Line Items]
Customer accounted for 10% or more of sales		12.00%	12.00%	12.00%
United States Postal Service \| CompX Security Products Business
Loss Contingencies [Line Items]
Customer accounted for 10% or more of sales		13.00%	13.00%