Property And Equipment (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property and Equipment (Textual) [Abstract]
Depreciation and amortization expenses	$ 660,000	$ 646,000	$ 676,000
Disposition of fixed assets	500,000
Accumulated Depreciation	400,000
Write-off of assets	$ 100,000