Investment Securities (Details Textual) (USD $)	6 Months Ended	12 Months Ended
	Jun. 30, 2014 Security	Dec. 31, 2013 Security
Investment Securities (Additional Textual) [Abstract]
Trading securities	$ 7,679,000	$ 7,247,000
Unrealized gains on trading securities	49,600	51,800
Unrealized losses on trading securities	5,500	3,100
Net unrealized gains (losses) on trading securities	(44,100)
Realized gains on trading securities	222,900
Carrying value of investment securities for pledge	118,500,000	108,500,000
Investment securities with fair value less than amortized cost	49	83
Minimum assets of trust preferred securities issued by institution	15,000,000,000
Amortized cost	170,951,000	165,219,000
Fair value	170,913,000	160,886,000
Non-accrual investment securities	251,000	1,200,000
Estimated length of interest payment delays	10 years
Minimum
Investment Securities (Additional Textual) [Abstract]
Trust preferred securities in nonaccrual status	1
Maximum
Investment Securities (Additional Textual) [Abstract]
Trust preferred securities in nonaccrual status	2
iTruPS securities
Investment Securities (Additional Textual) [Abstract]
Number of securities owned by company		9
Amortized cost		10,500,000
Fair value		8,500,000
Other than temporary impairment losses		$ 2,000,000