Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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- Definition

The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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Share-Based Compensation (Annual and Quarter) (Detail) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	6,500	12,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period		(11,000)	(3,000)
Stock Granted During Period, Shares, Share-based Compensation	50,000
Allocated Share-based Compensation Expense (in Dollars)	$ 43,000
6.10-7.00 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number		7,500
0.65-5.95 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number		4,500
1995 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		125,000
Non-Employee Director Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		30,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period		1,000	3,000
Non-Statutory Stock Option Agreement [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		10,000
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Forfeitures		10,000