Deposits (Details 2) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Contractual maturities of time deposits of $100,000 or more, domestic
Time deposits, $100,000 or more, domestic, Three Months or Less	$ 4,899,000	$ 5,008,000
Time deposits, $100,000 or more, domestic, Over Three and Less than Six Months	1,248,000	3,356,000
Time deposits, $100,000 or more, domestic, Over Six and Less than Twelve	6,381,000	3,039,000
Time deposits, $100,000 or more, domestic, Over Twelve Months	10,087,000	11,317,000
Time deposits, $100,000 or more, domestic, Total	$ 22,615,000	$ 22,720,000