Pension and Other Post-Retirement Benefits (Weighted Average Assumptions) (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Post-Retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rates:	3.74%	3.89%
Health care cost trend rate - initial	6.25%	6.50%
Health care cost trend rate - ultimate	5.00%	5.00%	5.00%
Year ultimate reached	2022	2022	2022
WHX Pension Plan | WHX Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Discount rates:	3.84%	4.01%
WHX Pension Plan II | WHX Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Discount rates:	3.64%
JPS Pension Plan | WHX Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Discount rates:	3.81%	3.93%