Commitments and Contingencies (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Lease and Insuance Expense	$ 366,000	$ 381,000
Operating Leases, Rent Expense, Net	257,000	259,000
Defined Benefit Plan, Special Termination Benefits	833,000
Director [Member]
Severance Costs	59,000
Research and Development Arrangement [Member]
Revenues	$ 42,000	$ 56,000