Term Debt (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Term Debt [Abstract]
Term debt	$ 253,605,000	$ 255,676,000
FHLB advances unamortized purchase accounting adjustment	8,100,000
Maximum outstanding FHLB advances at any month end	245,000,000	250,000,000
Average outstanding FHLB advances during period	$ 245,000,000	$ 245,800,000
Average interest rate on borrowings	4.60%	4.60%