Environmental Remediation Obligations [Line Items]

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Ownership Responsibility for Site Investigation and Remediation Costs, Percentage Allocation

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- Definition

Site Contingency, Loss Exposure Not Accrued, Counteroffer

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- Definition

Site Contingency, Loss Exposure Not Accrued, Damages Claimed

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- Definition

Amount of cash outflow to settle environmental loss contingencies.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section S99
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- Definition

Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable in twelve months or in the next operating cycle if longer.

+ References

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- Definition

Total anticipated costs associated with remediation, site restoration, postclosure, monitoring commitments, or other exit costs that may occur on the sale, disposal, or abandonment of a particular property resulting from unanticipated contamination of the assets.

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- Definition

Estimate of reasonably possible loss exposure in excess of amount accrued for remediation, site restoration, postclosure, monitoring commitments, or other exit costs associated with the sale, disposal or abandonment of a particular property resulting from unanticipated contamination of the assets.

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The charge against earnings in the period for known or estimated future costs arising from requirements to perform environmental remediation activities.

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Amount of the estimated recovery from third parties recorded in the period for an individual site that reduces environmental remediation expense.

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Commitments and Contingencies (Details) - USD ($)		3 Months Ended			6 Months Ended
Commitments and Contingencies (Details) - USD ($)	Feb. 13, 2013	Dec. 31, 2017	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016	Dec. 31, 2012
Environmetal Remediation Obligations [Line Items]
Accrued environmental liabilities, current			$ 9,770,000		$ 9,770,000		$ 9,625,000
Previously incurred costs					0	$ 0
Pennsauken \| SL Industries, Inc. (SLI)
Environmetal Remediation Obligations [Line Items]
Environmental loss contingencies, payments			$ 2,200,000
Camden \| SL Industries, Inc. (SLI)
Environmetal Remediation Obligations [Line Items]
Counteroffer	$ 300,000
Camden - past and future expenses \| SL Industries, Inc. (SLI)
Environmetal Remediation Obligations [Line Items]
Damages claimed								$ 1,800,000
Environmental and other matters \| Sold Parcel
Environmetal Remediation Obligations [Line Items]
Remediation cost, expected cost				$ 100,000	$ 200,000
Environmental and other matters \| Costs \| Former Owner / Operator
Environmetal Remediation Obligations [Line Items]
Ownership responsibility for site investigation and remediation costs, percentage allocation (as a percent)			75.00%		75.00%
Environmental remediation expense					$ 6,000,000
Environmental and other matters \| Costs \| Hhem and HandH
Environmetal Remediation Obligations [Line Items]
Ownership responsibility for site investigation and remediation costs, percentage allocation (as a percent)			25.00%		25.00%
Environmental loss contingencies, payments					$ 1,000,000.0
Environmental remediation expense					1,900,000
SurfTech sites \| Scenario, forecast \| SL Industries, Inc. (SLI)
Environmetal Remediation Obligations [Line Items]
Remediation cost, expected cost		$ 2,900,000
Wayne, New Jersey site \| SL Industries, Inc. (SLI)
Environmetal Remediation Obligations [Line Items]
Remediation cost, expected cost					1,400,000
Minimum \| Environmental and other matters \| Sold Parcel
Environmetal Remediation Obligations [Line Items]
Reasonably possible aggregate loss					2,000,000
Minimum \| Environmental and other matters \| Costs \| Hhem and HandH
Environmetal Remediation Obligations [Line Items]
Reasonably possible aggregate loss					100,000
Maximum \| Environmental and other matters \| Sold Parcel
Environmetal Remediation Obligations [Line Items]
Reasonably possible aggregate loss					6,000,000
Maximum \| Environmental and other matters \| Costs \| Hhem and HandH
Environmetal Remediation Obligations [Line Items]
Reasonably possible aggregate loss					$ 4,000,000