Income Taxes (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2012
Operating Loss Carryforwards, Expiration Dates	carry forwards expire between 2020 and 2032
Operating Loss Carryforwards, Limitations on Use	Under the provision of the Tax Reform Act of 1986, when there has been a change in an entity's ownership of 50 percent or greater, utilization of net operating loss carry forwards may be limited.
Operating Loss Carryforwards Limitations On Use Amount	$ 4,900,000
Tax Benefit from Stock Options Exercised	923,000
Domestic Tax Authority [Member]
Operating Loss Carryforwards	19,800,000
State and Local Jurisdiction [Member]
Operating Loss Carryforwards	$ 12,100,000