Long-term Debt and Capital Lease Obligations HNH Senior Credit Facility (Details) - USD ($)		6 Months Ended
	Aug. 05, 2014	Jun. 30, 2015	Jan. 22, 2015	Dec. 31, 2014	Aug. 29, 2014	Aug. 04, 2014	Jun. 03, 2014	Feb. 28, 2013
HNH | Interest Rate Swap
Debt Instrument [Line Items]
Description of variable rate basis		one-month LIBOR
Derivative, Fixed interest rate (as a percent)		0.598%						0.569%
Notional value		$ 5,000,000						$ 56,400,000
Decrease 2015		100,000						1,100,000
Decrease 2016		200,000						1,800,000
Decrease 2017		$ 200,000						$ 2,200,000
HNH | London Interbank Offered Rate (LIBOR) | Senior Notes
Debt Instrument [Line Items]
Description of variable rate basis		LIBOR
Long-term debt, basis spread on variable rate (as a percent)		1.75%
HNH | Base Rate | Senior Notes
Debt Instrument [Line Items]
Description of variable rate basis		Base Rate
Long-term debt, basis spread on variable rate (as a percent)		0.75%
HNH | Loans Payable | Revolving Credit Facility
Debt Instrument [Line Items]
Long-term Debt	$ 40,000,000	$ 81,900,000		$ 193,375,000		$ 110,000,000
Proceeds from Contributions from Parent	$ 80,000,000
HNH | Revolving Credit Facility | Senior Debt Obligations
Debt Instrument [Line Items]
Subsidiaries offered as collateral		$ 368,000,000
HNH | Line of Credit | Senior Debt Obligations
Debt Instrument [Line Items]
Term loan					$ 365,000,000
HNH | Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Weighted average rate (as a percent)		1.97%
HNH | Revolving Credit Facility | Line of Credit | Sublimit for Issuance of Letters of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity					20,000,000
HNH | Revolving Credit Facility | Line of Credit | Sublimit for Issuance of Swing Loans
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 20,000,000
HNH | Line of Credit | Letter of Credit
Debt Instrument [Line Items]
Remaining borrowing capacity		$ 153,800
WHX CS Corp. | Long-term Debt | WHX CS Loan [Member]
Debt Instrument [Line Items]
Term loan							$ 15,000,000
WHX CS Corp. | Long-term Debt | London Interbank Offered Rate (LIBOR) | WHX CS Loan [Member]
Debt Instrument [Line Items]
Description of variable rate basis		LIBOR
Long-term debt, basis spread on variable rate (as a percent)		1.25%
JPS Industries, Inc. | HNH Group Acquisition LLC | Revolving Credit Facility | Line of Credit | Limit for Buying Shares
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 71,000,000