Note 16 - Related Party Transactions (Detail) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012
Number of Directors	3	3
Steel Partners Holdings LP [Member] | SWH, Inc [Member]
Business Acquisition, Cost of Acquired Entity, Purchase Price	$ 62,700,000	$ 62,700,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares)		2,027,500
Equity Issuance, Per Share Amount (in Dollars per share)		$ 27
Business Acquisition, Cost of Acquired Entity, Cash Paid	7,900,000	7,900,000
Business Acquisition, Affiliate Ownership Description		Affiliates of Steel Partners Holdings L.P. ("Steel Partners") owned approximately 40% of the Company's outstanding common stock and 85% of BNS on May 31, 2012. The Company appointed a special committee (the "Special Committee") comprised solely of independent directors to consider and negotiate the transaction, as did BNS, because of the interest of Steel Partners in each company. The Special Committee, with the assistance of its independent financial advisor, considered a number of factors in negotiating the acquisition price, including, without limitation, the fairness opinion from its financial advisor. As a result of the acquisition, Steel Partners beneficially owns approximately 51.1% of the Company's outstanding common stock as of June 30, 2012.
Chief Executive Officer [Member] | Monthly Compensation [Member]
Related Party Transaction, Amounts of Transaction		30,000
SP Corporate Services LLC [Member] | Management Fees [Member]
Related Party Transaction, Expenses from Transactions with Related Party	300,000	500,000
SWH, Inc [Member]
Business Acquisition, Cost of Acquired Entity, Purchase Price	62,700,000	62,700,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares)		2,027,500
Equity Issuance, Per Share Amount (in Dollars per share)		$ 27
Business Acquisition, Cost of Acquired Entity, Cash Paid	$ 7,900,000	$ 7,900,000
Business Acquisition, Affiliate Ownership Description		Affiliates of Steel Partners Holdings L.P. ("Steel Partners") owned approximately 40% of the Company's outstanding common stock and 85% of BNS on May 31, 2012. As a result of the acquisition, Steel Partners beneficially owns approximately 51.1% of the Company's outstanding common stock.