Stock Options and Equity Compensation Plan (Detail Textuals) (Selling, general and administrative expenses, USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Selling, general and administrative expenses
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based employee compensation expense	$ 46,000	$ 52,000	$ 62,000	$ 58,000