Derivatives (Narrative) (Details) (USD $)			3 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013 Interest Rate Contract [Member]
Threshold of fair value shortfalls that require company to collateralize	$ 250,000
Notional amount of interest rate swaps	20,800,000	0
Notional amount of interest rate swap with commercial loan customer	10,400,000
Notional amount of interest rate swap with counterparty	10,400,000
Fee income related to interest rate swap contracts			$ 138,000