PENSION AND OTHER POST-RETIREMENT BENEFITS (Category, Fair Value, Redemption Frequency and Redemption Notice Period of Assets) (Details) - Handy & Harman Ltd. (HNH) - Pension Benefits - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	$ 347,921	$ 323,493	$ 351,869
Fund of funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		34,705
Fund of funds | International large cap growth
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	$ 4,531
Fund of funds | Collective equity investment funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Redemption Notice Period	2 days
Fund of funds | Equity long/short hedge funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		$ 5,479
Redemption Frequency		Quarterly
Redemption Notice Period		45 days
Fund of funds | Fund of fund composites
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		$ 36,352
Redemption Frequency		Quarterly
Redemption Notice Period		65 days
Hedge funds | Event driven hedge funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	$ 45,660	$ 50,131
Redemption Frequency		Monthly
Redemption Notice Period		90 days
Hedge funds | Equity long/short hedge funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	2,706	$ 12,770
Redemption Frequency		Annually
Redemption Notice Period		90 days
Hedge funds | Collective equity investment funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	61,097
Hedge funds | Equity long/short hedge funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		$ 59,727
Redemption Frequency		Annually
Redemption Notice Period		45 days
Separately managed fund | Insurance separate account
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	$ 15,013
Separately managed fund | Separately managed fund
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		$ 28,917
Redemption Frequency		Monthly
Redemption Notice Period		30 days
Separately managed fund | Separately managed fund
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		$ 66,851
Redemption Frequency		Quarterly
Redemption Notice Period		45 days