Company known along with other companies.

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- Definition

Site contingencies and current estimates of the potential remediation costs percentage of contribution to total waste.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 5.Y.Q4)
-URI http://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751

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- Definition

Cash outflows made during the period for environmental remediation activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 17
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3367-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

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Commitments and Contingencies - Contingencies (Details)	1 Months Ended	6 Months Ended	12 Months Ended
Commitments and Contingencies - Contingencies (Details)	Jan. 31, 2012	Sep. 30, 2016 USD ($) Company	Dec. 31, 2017 USD ($)
Environmental Exit Cost [Line Items]
Companies named as Potentially Responsible Parties (more than) \| Company		100
Payments for OPOG's legal expenses and remediation costs		$ 80,000
Percent of contribution to the total waste	0.50%
Scenario, Forecast [Member]
Environmental Exit Cost [Line Items]
Estimate of CY 2017 payments for environmental issues			$ 75,000