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SUBSEQUENT EVENTS Acorn investment in USSI (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended		3 Months Ended	12 Months Ended	0 Months Ended
	Nov. 01, 2012	Jul. 30, 2012	Sep. 30, 2012	Dec. 31, 2012	Mar. 01, 2013 Subsequent Event [Member]
Subsequent Event [Line Items]
Preferred stock purchase USSI	$ 2,500	$ 2,500		$ 2,500	$ 2,500
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions			93.60%		95.00%
Preferred share purchase - USSI - future					$ 2,500
Cumulative Percentage Ownership after All Future Transactions	94.40%				95.60%
fully diluted ownership	85.10%			71.40%	87.90%