Related Party Transactions Corporate Services (Details) - Management Fee $ in Thousands	6 Months Ended
	Jun. 30, 2015 USD ($)
Handy & Harman Ltd. (HNH)
Related Party Transaction [Line Items]
Services fees and reimbursable expenses	$ 10,551
Steel Excel Inc.
Related Party Transaction [Line Items]
Services fees and reimbursable expenses	8,150
SPLP
Related Party Transaction [Line Items]
Services fees and reimbursable expenses	6,000
Webfinancial Holdings
Related Party Transaction [Line Items]
Services fees and reimbursable expenses	2,000
DGT
Related Party Transaction [Line Items]
Services fees and reimbursable expenses	476
WebBank
Related Party Transaction [Line Items]
Services fees and reimbursable expenses	250
BNS
Related Party Transaction [Line Items]
Services fees and reimbursable expenses	204
CoSine
Related Party Transaction [Line Items]
Services fees and reimbursable expenses	204
Related Parties
Related Party Transaction [Line Items]
Services fees and reimbursable expenses	$ 4,121