Loans Held for Investment (Details 2) (USD $)	Sep. 30, 2012
Purchase Credit Impaired
Total purchase credit impaired	$ 10,172,000
Purchased credit impaired loans, nonaccrual status	3,900,000
Canyon National
Purchase Credit Impaired
Total purchase credit impaired	4,395,000
Palm Desert National
Purchase Credit Impaired
Total purchase credit impaired	5,777,000
Real estate loans: Commercial non-owner occupied
Purchase Credit Impaired
Total purchase credit impaired	6,036,000
Real estate loans: Commercial non-owner occupied | Canyon National
Purchase Credit Impaired
Total purchase credit impaired	1,051,000
Real estate loans: Commercial non-owner occupied | Palm Desert National
Purchase Credit Impaired
Total purchase credit impaired	4,985,000
Real estate loans: One-to-four family
Purchase Credit Impaired
Total purchase credit impaired	33,000
Real estate loans: One-to-four family | Palm Desert National
Purchase Credit Impaired
Total purchase credit impaired	33,000
Real estate loans: Land
Purchase Credit Impaired
Total purchase credit impaired	2,573,000
Real estate loans: Land | Canyon National
Purchase Credit Impaired
Total purchase credit impaired	2,293,000
Real estate loans: Land | Palm Desert National
Purchase Credit Impaired
Total purchase credit impaired	280,000
Business loans: Commercial owner occupied
Purchase Credit Impaired
Total purchase credit impaired	1,249,000
Business loans: Commercial owner occupied | Canyon National
Purchase Credit Impaired
Total purchase credit impaired	972,000
Business loans: Commercial owner occupied | Palm Desert National
Purchase Credit Impaired
Total purchase credit impaired	277,000
Business loans: Commercial and industrial
Purchase Credit Impaired
Total purchase credit impaired	281,000
Business loans: Commercial and industrial | Canyon National
Purchase Credit Impaired
Total purchase credit impaired	79,000
Business loans: Commercial and industrial | Palm Desert National
Purchase Credit Impaired
Total purchase credit impaired	$ 202,000