Loans Held for Investment (Details 2) (USD $)	Mar. 31, 2013
Purchased Credit Impaired
Total purchase credit impaired	$ 3,582,000
Purchased credit impaired loans, nonaccrual status	34,000
Canyon National
Purchased Credit Impaired
Total purchase credit impaired	3,081,000
Palm Desert National
Purchased Credit Impaired
Total purchase credit impaired	501,000
Business loans: Commercial and industrial
Purchased Credit Impaired
Total purchase credit impaired	291,000
Business loans: Commercial and industrial | Canyon National
Purchased Credit Impaired
Total purchase credit impaired	77,000
Business loans: Commercial and industrial | Palm Desert National
Purchased Credit Impaired
Total purchase credit impaired	214,000
Business loans: Commercial owner occupied
Purchased Credit Impaired
Total purchase credit impaired	1,201,000
Business loans: Commercial owner occupied | Canyon National
Purchased Credit Impaired
Total purchase credit impaired	941,000
Business loans: Commercial owner occupied | Palm Desert National
Purchased Credit Impaired
Total purchase credit impaired	260,000
Real estate loans: Commercial non-owner occupied
Purchased Credit Impaired
Total purchase credit impaired	1,029,000
Real estate loans: Commercial non-owner occupied | Canyon National
Purchased Credit Impaired
Total purchase credit impaired	1,029,000
Real estate loans: One-to-four family
Purchased Credit Impaired
Total purchase credit impaired	27,000
Real estate loans: One-to-four family | Palm Desert National
Purchased Credit Impaired
Total purchase credit impaired	27,000
Real estate loans: Land
Purchased Credit Impaired
Total purchase credit impaired	1,034,000
Real estate loans: Land | Canyon National
Purchased Credit Impaired
Total purchase credit impaired	$ 1,034,000