Short-Term Borrowings (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2013
Short-term Debt [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 50,000,000
Line of Credit Facility, Expiration Date 1	Oct. 31, 2015
Line of Credit Facility, Amount Outstanding	407,000
Line of Credit Facility, Remaining Borrowing Capacity	48,931,000
Line of Credit Facility Provision to Increase Borrowing Capacity	$ 75,000,000
Short-term Debt, Weighted Average Interest Rate	1.50%
Maximum [Member]
Short-term Debt [Line Items]
Line of Credit Facility, Interest Rate Description	LIBOR market index rate plus 2.25%