Employee Benefit Plans (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Employee Benefit Plans [Line Items]
Administrative expense	$ 12,000	$ 16,000	$ 23,000
Deferred compensation expense	3,000	38,000	42,000
Discretionary contribution	230,000
Nonqualified Deferred Compensation Plan [Member]
Employee Benefit Plans [Line Items]
Deferred compensation expense	$ 126,000	$ 141,000	$ 218,000