Borrowed Funds (Details 2) (USD $)	1 Months Ended	3 Months Ended		9 Months Ended
	Mar. 31, 2007	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Trust Preferred Securities and Subordinated Debentures
Period after issuance that securities become redeemable	5 years
Borrowed funds		$ 4,124,000		$ 4,124,000		$ 4,124,000
Interest expense on borrowed funds		20,000	22,000	59,000	66,000
PMG
Trust Preferred Securities and Subordinated Debentures
Line of credit outstanding						59,000,000
Number of floating rate lines of credit with other banks						3
Subordinated Debentures
Trust Preferred Securities and Subordinated Debentures
Face amount of debt issued	4,000,000
Term of debt instrument	30 years
Variable rate basis spread (as a percent)				1.62%
Debt instrument interest rate description				three month LIBOR Rate
Borrowed funds		4,100,000	4,100,000	4,100,000	4,100,000
Interest expense on borrowed funds				$ 59,000	$ 66,000