Cash and Cash Equivalents (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cash and Cash Equivalents [Abstract]
Cash and Due from Banks	$ 37,076	$ 29,598
Interest-Bearing Deposits at Banks	11,756	14,138
Total Cash and Cash Equivalents	48,832	43,736	31,079	67,116
Total required reserves, including vault cash and Federal Reserve Bank deposits	$ 23,168	$ 24,268