Shareholders' Equity (Details) (USD $)	0 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Aug. 25, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Shareholders' Equity [Line Items]
Proceeds from stock options exercised		$ 213,000	$ 12,000	$ 255,000	$ 526,000
Exercise of common stock options, shares			10,000	160,563	458,011
Proceeds from exercise of stock warrants					562,000
Cashless Exercise Of Stock Options					60,000
Cashless exercise of warrants						581,895
Common stock issued for warrants exercised			1,000,000		1,072,116
Common Stock Issued For Stock Options Exercised					49,685
Stock Repurchase Program, Authorized Amount	2,500,000
Shares repurchased				125,000
Average cost of shares purchased				$ 2.95
Value of stocks repurchased				368,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount				2,000,000
Series B Convertible Preferred Stock [Member]
Shareholders' Equity [Line Items]
Preferred stock, shares issued		5,659		5,659		5,659
Preferred stock, shares outstanding		5,659		5,659		5,659
Warrant Exercise [Member]
Shareholders' Equity [Line Items]
Proceeds from exercise of stock warrants			$ 480,000		$ 562,000
Cashless exercise of warrants		0	186,666	0	581,995
Common stock issued for warrants exercised			154,728		476,663
Stock Options [Member]
Shareholders' Equity [Line Items]
Exercise of common stock options, shares		131,688		160,563