Related Party Transactions (Detail) (USD $)			12 Months Ended			10 Months Ended	12 Months Ended	2 Months Ended		1 Months Ended	12 Months Ended
	Aug. 23, 2013	Dec. 31, 2013 Percentage Owned By Steel Partners Steel Excel	Dec. 31, 2013 SP Corporate Services LLC	Dec. 31, 2012 SP Corporate Services LLC	Dec. 31, 2011 SP Corporate Services LLC	Jul. 31, 2012 SP Corporate Services LLC Monthly Fees for Financial Management and Administrative Services	Dec. 31, 2013 SP Corporate Services LLC Monthly Expanded Services	Mar. 07, 2014 SP Corporate Services LLC Monthly Expanded Services Subsequent Event	Dec. 31, 2013 SPH GP	Oct. 31, 2013 iGo, Inc.	Dec. 31, 2013 Web Bank Interest Income	Dec. 31, 2012 Web Bank Interest Income	Dec. 31, 2013 Web Bank Short-term deposits
Related Party Transaction [Line Items]
Ownership percentage (as a percent)	44.70%	55.10%
Expenses from transactions with related party			$ 4,400,000	$ 2,700,000	$ 400,000	$ 35,000	$ 300,000	$ 667,000
Accounts payable owned to related parties			300,000	300,000
Accounts receivable owed by related parties									200,000
Management fees revenue										400,000
Due from related parties, current													15,200,000
Revenue from related parties											$ 100,000	$ 100,000