Loans Held for Investment (Details) (USD $)							6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2012 Canyon National	Jun. 30, 2012 Palm Desert National	Jun. 30, 2012 Maximum	Jun. 30, 2012 Real estate loans: Multi-family	Dec. 31, 2011 Real estate loans: Multi-family	Jun. 30, 2011 Real estate loans: Multi-family	Dec. 31, 2010 Real estate loans: Multi-family	Jun. 30, 2012 Real estate loans: Commercial non-owner occupied	Dec. 31, 2011 Real estate loans: Commercial non-owner occupied	Jun. 30, 2011 Real estate loans: Commercial non-owner occupied	Dec. 31, 2010 Real estate loans: Commercial non-owner occupied	Jun. 30, 2012 Real estate loans: One-to-four family	Dec. 31, 2011 Real estate loans: One-to-four family	Jun. 30, 2011 Real estate loans: One-to-four family	Dec. 31, 2010 Real estate loans: One-to-four family	Jun. 30, 2012 Real estate loans: Construction	Jun. 30, 2012 Real estate loans: Land	Dec. 31, 2011 Real estate loans: Land	Jun. 30, 2011 Real estate loans: Land	Jun. 30, 2012 Business loans: Commercial owner occupied	Dec. 31, 2011 Business loans: Commercial owner occupied	Jun. 30, 2011 Business loans: Commercial owner occupied	Dec. 31, 2010 Business loans: Commercial owner occupied	Jun. 30, 2012 Business loans: Commercial and industrial	Dec. 31, 2011 Business loans: Commercial and industrial	Jun. 30, 2011 Business loans: Commercial and industrial	Dec. 31, 2010 Business loans: Commercial and industrial	Jun. 30, 2012 Business loans: Warehouse facilities	Dec. 31, 2011 Business loans: Warehouse facilities	Jun. 30, 2011 Business loans: Warehouse facilities	Jun. 30, 2012 Business loans: SBA	Dec. 31, 2011 Business loans: SBA	Jun. 30, 2011 Business loans: SBA	Dec. 31, 2010 Business loans: SBA	Jun. 30, 2012 Other loans	Dec. 31, 2011 Other loans	Jun. 30, 2011 Other loans	Dec. 31, 2010 Other loans
Loans Held for Investment
Total gross loans	$ 798,352,000	$ 739,254,000	$ 711,192,000					$ 183,742,000	$ 193,830,000	$ 231,604,000		$ 242,700,000	$ 164,341,000	$ 155,419,000		$ 56,694,000	$ 60,027,000	$ 64,550,000		$ 281,000	$ 11,191,000	$ 6,438,000	$ 8,752,000	$ 150,428,000	$ 152,299,000	$ 147,186,000		$ 84,191,000	$ 86,684,000	$ 70,744,000		$ 61,111,000	$ 67,518,000	$ 21,758,000	$ 3,995,000	$ 4,727,000	$ 4,682,000		$ 4,019,000	$ 3,390,000	$ 6,497,000
Less loans held for sale, net	2,401,000
Total gross loans held for investment	795,951,000	739,254,000	711,192,000
Less: Deferred loan origination costs (fees) and premiums (discounts), net	(632,000)	(665,000)	(3,096,000)
Less: Allowance for loan losses	(7,658,000)	(8,522,000)	(8,517,000)	(8,879,000)				(2,284,000)	(2,281,000)	(2,456,000)	(2,730,000)	(1,667,000)	(1,287,000)	(1,490,000)	(1,580,000)	(303,000)	(931,000)	(324,000)	(332,000)			(39,000)		(1,076,000)	(1,119,000)	(1,536,000)	(1,687,000)	(1,250,000)	(1,361,000)	(1,959,000)	(2,356,000)	(908,000)	(1,347,000)	(602,000)	(151,000)	(80,000)	(97,000)	(145,000)	(19,000)	(77,000)	(53,000)	(49,000)
Loans held for investment, net	787,661,000	730,067,000	699,579,000
Secured loans limit to one borrower (as a percent)							25.00%
Unsecured loans limit to one borrower (as a percent)							15.00%
Secured loans limit to one borrower	25,600,000
Unsecured loans limit to one borrower	15,400,000
Aggregate outstanding balance of loans to one borrower of secured credit	11,900,000
Mark-to-market discount					$ 3,700,000	$ 11,000,000