Long-Term Borrowings (Long Term Borrowing) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
Long-term borrowings:
Term note payable (parent company)	$ 14,369		$ 19,147
Callable national market repurchase agreements	40,000		40,000
Long-term borrowings	179,083		121,826
Term note payable (parent company), Weighted-Average Rate	3.50%	3.50%	3.80%
Callable national market repurchase agreements, Weighted-Average Rate	3.63%		3.63%
Total long-term borrowings, Weighted-Average Rate	3.12%		3.53%
FHLB putable non-amortizing, fixed rate advances
Long-term borrowings:
Long-term Federal Home Loan Bank Advances	83,995		50,000
FHLB fixed rate advances, Weighted-Average Rate	3.30%		3.32%
FHLB amortizing, fixed rate advances
Long-term borrowings:
Long-term Federal Home Loan Bank Advances	$ 40,719		$ 12,679
FHLB fixed rate advances, Weighted-Average Rate	2.13%		3.58%