Investment Securities (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2013 security	Jun. 30, 2012	Jun. 30, 2013 security	Jun. 30, 2012	Dec. 31, 2012 security
Investment Securities [Abstract]
Available-for-sale Securities Pledged as Collateral	$ 96,026		$ 96,026		$ 96,124
Available-for-sale Securities, Gross Realized Gains	112	10	112	26
Available-for-sale Securities, Gross Realized Losses			$ 0	$ 0
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	115		115		73
Available-for-sale, Securities in Unrealized Loss Positions, Depreciation Percentage			4.31%		1.03%
Average Life of Mortgage-backed Securities	3 years 2 months 12 days		3 years 2 months 12 days