Accounting for Stock-Based Compensation (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Accounting for Stock-Based Compensation
Stock-based compensation expense	$ 39,000	$ 49,000
Options exercised (in shares)	0	100,000
Valuation Assumptions
Weighted average grant date fair value (in dollars per share)	$ 0.44	$ 0.59	$ 0.47	$ 0.63
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)	0.80%	0.75%	0.82%	0.84%
Expected volatility (as a percent)	227.00%	216.00%	225.00%	213.00%
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)	20,000	15,000