Subsequent Events (Detail) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended
	Jul. 27, 2012 Issuance of promissory note 8% Subordinated Convertible Shareholder Notes Due 2016	Jul. 27, 2012 Subsequent Event [Member] 8% Subordinated Convertible Shareholder Notes Due 2016	Jul. 31, 2012 Subsequent Event [Member]	Feb. 16, 2012 8% Subordinated Convertible Shareholder Notes Due 2016
Subsequent Event, Amount (in Dollars)	$ 3.0		$ 3.0
Debt Instrument, Interest Rate, Stated Percentage		8.00%
Class of Warrant or Right, Number of Securities Called by Warrants or Rights		45,000		5,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)		2.09		3.80
Debt Conversion, Converted Instrument, Shares Issued		250,000
Debt Instrument, Convertible, Conversion Price (in Dollars per share)		$ 4.00