Plan of Restructuring (Detail) (USD $)	6 Months Ended							6 Months Ended		6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 Unit [Member]	Jun. 30, 2012 A Warrants (Member)	Jun. 30, 2012 B Warrants [Member]	Jun. 30, 2012 Warrant A and Warrant B [Member]	Jun. 30, 2012 Placement Agent Warrants [Member]	Jun. 30, 2012 8¼% Limited convertible senior subordinated notes due 2012 [Member]	Nov. 14, 2011 8¼% Limited convertible senior subordinated notes due 2012 [Member]	Jun. 30, 2012 9½% Subordinated debentures due 2012 [Member]	Nov. 14, 2011 9½% Subordinated debentures due 2012 [Member]
Debt Instrument Amount Paid								$ 225		$ 100
Debt Instrument, Convertible, Number of Equity Instruments								250
Debt Instrument Convertible Value Exchanged								1,000		1,000
Debt Instrument, Repurchase Amount								57,000	8,976,000	5,000	718,000
Stock Issued During Period, Shares, Conversion of Convertible Securities (in Shares)	2,244,000
Securities Issued	8,300,000
Series A Convertible Preferred Stock, Shares Issued (in Shares)	416,500
Preferred Stock, Par or Stated Value Per Share (in Dollars per share)	$ 0.001	$ 0.001
Convertible Preferred Stock, Shares Issued upon Conversion (in Shares)	50
Common Stock, Par or Stated Value Per Share (in Dollars per share)	$ 0.001	$ 0.001
Common Stock Shares Converted From Conversion (in Shares)	20,825,000
Sale of Stock, Number of Shares Issued in Transaction (in Shares)	4,165,000
Preferred Stock Stated Value Per Share (in Shares)	20,000
Common Stock, Shares, Issued (in Shares)	25,895,424	5,070,424	1,000
Preferred Stock, Shares Issued (in Shares)	0	416,500	50,000
Warrants Issued (in Shares)			10,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)				0.20	0.50
Placement Agent Fees	8,000,000
Placement Agent Cash Fee	200,000
Placement Agent Fees Notes Issued	200,000
Common Stock, Shares Authorized (in Shares)	60,000,000	60,000,000
Secured Debt (in Dollars)	650,000
Repayments of Notes Payable	2,019,600
Cash Settlement Debentureholder	71,800
Repayments of Senior Debt	320,833
Class of Warrant or Right, Outstanding (in Shares)						8,330,000	2,680,000
Restructuring Costs	1,400,000
Other Restructuring Costs	$ 163,000