Securities Authorized for Issuance under Equity Compensation Plans (Details Textual) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Securities Authorized for Issuance under Equity Compensation Plans (Textual)
Stock options exercised			145,000
Number of shares withhold in connection with net exercise feature of options			14,633
Shares issued to option holders			130,367
Stock compensation expense attributable to stock awards	$ 356,000	$ 306,000	$ 356,000	$ 306,000
Unrecognized compensation expense related to stock options awarded to employees
Stock option [Member]
Securities Authorized for Issuance under Equity Compensation Plans (Textual)
Stock compensation expense attributable to stock awards	$ 0	$ 4,000	$ 0	$ 9,000