Accounting for Stock-Based Compensation (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Accounting for Stock-Based Compensation
Stock-based compensation expense	$ 47,000	$ 60,000	$ 165,000	$ 168,000
Options exercised (in shares)		60,000	130,000	60,000
Valuation Assumptions
Weighted average grant date fair value (in dollars per share)	$ 0.56	$ 0.39	$ 0.63	$ 0.67
Weighted average assumptions used:
Expected dividend yield (as a percent)	0.00%	0.00%	0.00%	0.00%
Risk-free interest rate (as a percent)	0.75%	1.10%	0.84%	2.10%
Expected volatility (as a percent)	216.00%	207.00%	213.20%	202.00%
Expected life	5 years	5 years	4 years 10 months 24 days	4 years 10 months 24 days
Employees
Accounting for Stock-Based Compensation
Stock options granted (in shares)	3,000	6,000
Employees and directors
Accounting for Stock-Based Compensation
Stock options granted (in shares)			328,000	423,000