Investment Securities Available-for-Sale (Details Textual) (USD $)	3 Months Ended	12 Months Ended			3 Months Ended
	Mar. 31, 2013 Investment	Dec. 31, 2012 Security	Mar. 31, 2013 Minimum Investment	Mar. 31, 2013 Maximum Investment	Sep. 30, 2012 Trust preferred securities Position
Investment Securities (Additional Textual) [Abstract]
Carrying value of investment securities for pledge	$ 113,800,000	$ 107,600,000
Investment securities with fair value less than amortized cost	47	46
Number of securities sold					the Company was able to sell 19 of the 22 bank collateralized positions.
Sale of collateralized positions					19
Total number of collateralized positions					22
Non material bank collateralized positions					3
Non material insurance collateralized positions					9
Non-accrual investment securities	$ 743,000
Estimated length of interest payment delays	10 years
Trust preferred securities in nonaccrual status			3	15