PENSION AND OTHER POST-RETIREMENT BENEFITS (Other Changes in Plan Assets and Benefit Obligations Recognized in Comprehensive Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Handy & Harman Ltd. (HNH) | Pension Benefits
Defined Benefit Plans Disclosure [Line Items]
Current year actuarial (income) loss	$ (48,505)	$ 90,106	$ (54,111)
Amortization of actuarial loss	(6,229)	(1,878)	(5,026)
Current year prior service credit	0	0	0
Amortization of prior service cost (credit)	0	0	0
Total recognized in comprehensive (income) loss	(54,734)	88,228	(59,137)
Handy & Harman Ltd. (HNH) | Other Post-Retirement Benefits
Defined Benefit Plans Disclosure [Line Items]
Current year actuarial (income) loss	159	293	(1,403)
Amortization of actuarial loss	(37)	(34)	(8)
Current year prior service credit	0	0	(1,506)
Amortization of prior service cost (credit)	103	103	0
Total recognized in comprehensive (income) loss	225	$ 362	$ (2,917)
API | Pension Benefits
Defined Benefit Plans Disclosure [Line Items]
Current year actuarial (income) loss	903
Amortization of actuarial loss	0
Current year prior service credit	0
Amortization of prior service cost (credit)	0
Total recognized in comprehensive (income) loss	$ 903