Provision (Benefit) for Income Taxes (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Stock-based compensation tax shortfall	$ 558,000
Total tax impact of APIC shortfall	2,200,000
Adjustments to Additional Paid in Capital, Income Tax Deficiency from Share-based Compensation	1,600,000
Deferred Tax Assets, Operating Loss Carryforwards	337,100,000
Valuation allowance of carryover tax assets	$ 6,600,000	$ 6,000,000