Fair Value Measurements (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Jul. 02, 2012	Jul. 02, 2011
Change in fair value for financial instruments
Net unrealized gain		$ (75)
Sales
Payoff at par
Fair value, Ending Balance	5,756	5,343	5,756	5,343
Significant Unobservable Inputs (Level 3) [Member]
Change in fair value for financial instruments
Fair value, Ending Balance	5,756		5,756
Significant Unobservable Inputs (Level 3) [Member] | Loan Securities Carried at Fair Value [Member]
Change in fair value for financial instruments
Fair value, Beginning Balance			5,309	11,981	5,385	5,418
Net unrealized gain	371		447	2,772
Sales				(662)
Payoff at par				(8,748)
Fair value, Ending Balance	5,756	5,343	5,756	5,343	5,385	5,418
The amount of total gains or losses for the period included in earnings attributable to the change in unrealized gains or losses relating to assets still held at the reporting date	$ 371	$ (75)	$ 447	$ 692