Pension and Other Post-Retirement Benefits (Fair Value WHX/Bear Pension Plan Assets, Significant Unobservable Inputs) (Details) - Pension Benefits - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Unfunded commitments	$ 20,000
Change in plan assets:
Fair value of plan assets at January 1	347,921
Fair value of plan assets at December 31	331,872	$ 323,493
Level 3
Change in plan assets:
Fair value of plan assets at January 1	0
Transfers into Level 3	0
Transfers out of Level 3	0
Gains or losses included in changes in net assets	0
Purchases	4,375
Issuances	0
Sales	0
Settlements	0
Fair value of plan assets at December 31	4,375
Convertible promissory notes \| Level 3
Change in plan assets:
Fair value of plan assets at January 1	0
Transfers into Level 3	0
Transfers out of Level 3	0
Gains or losses included in changes in net assets	0
Purchases	3,500
Issuances	0
Sales	0
Settlements	0
Fair value of plan assets at December 31	3,500
Stock warrants \| Level 3
Change in plan assets:
Fair value of plan assets at January 1	0
Transfers into Level 3	0
Transfers out of Level 3	0
Gains or losses included in changes in net assets	0
Purchases	875
Issuances	0
Sales	0
Settlements	0
Fair value of plan assets at December 31	$ 875
Corporate Bonds and Loans \| Level 3
Change in plan assets:
Fair value of plan assets at January 1		500
Transfers into Level 3		0
Transfers out of Level 3		0
Gains or losses included in changes in net assets		73
Purchases		0
Issuances		0
Sales		(573)
Settlements		0
Fair value of plan assets at December 31		$ 0

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Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 30
-Section 35
-Paragraph 50
-URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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The amount that relates to an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include (a) making lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and (b) purchasing nonparticipating annuity contracts.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 30
-Section 15
-Paragraph 6
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=7577095&loc=d3e8001-114927

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The amount of unfunded commitments for which the entity is obligated, to those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 6A
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=SL6742756-110258

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