Accounting for Stock-Based Compensation (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accounting for Stock-Based Compensation
Options exercised (in shares)	0	7,500	150,000	157,500
Valuation Assumptions
Weighted average grant date fair value (in dollars per share)	$ 1.93	$ 2.05	$ 2.11	$ 1.79
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)	1.33%	1.51%	1.38%	1.46%
Expected volatility (as a percent)	170.00%	225.00%	176.30%	228.00%
Expected life (in years)	5 years	5 years	5 years	4 years 10 months 24 days
Employees
Accounting for Stock-Based Compensation
Stock-based compensation expense	$ 44,000	$ 89,000	$ 112,000	$ 188,000
Employees and Contractors
Accounting for Stock-Based Compensation
Stock options granted (in shares)	27,000	15,000	40,000	395,000