Loans Held for Investment (Details) (USD $)					6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2014 Maximum	Jun. 30, 2014 Canyon National	Jun. 30, 2014 Palm Desert National	Jun. 30, 2014 San Diego Trust Bank	Jun. 25, 2013 San Diego Trust Bank	Jun. 30, 2014 FAB	Mar. 15, 2013 FAB	Jun. 30, 2014 Business loans: Commercial and industrial	Dec. 31, 2013 Business loans: Commercial and industrial	Jun. 30, 2013 Business loans: Commercial and industrial	Dec. 31, 2012 Business loans: Commercial and industrial	Jun. 30, 2014 Business loans: Commercial and industrial Canyon National	Jun. 30, 2014 Business loans: Commercial owner occupied	Dec. 31, 2013 Business loans: Commercial owner occupied	Jun. 30, 2013 Business loans: Commercial owner occupied	Dec. 31, 2012 Business loans: Commercial owner occupied	Jun. 30, 2014 Business loans: Commercial owner occupied Canyon National	Jun. 30, 2014 Business loans: SBA	Dec. 31, 2013 Business loans: SBA	Jun. 30, 2013 Business loans: SBA	Dec. 31, 2012 Business loans: SBA	Jun. 30, 2014 Business loans: Warehouse facilities	Dec. 31, 2013 Business loans: Warehouse facilities	Jun. 30, 2013 Business loans: Warehouse facilities	Dec. 31, 2012 Business loans: Warehouse facilities	Jun. 30, 2014 Real estate loans: Commercial non-owner occupied	Dec. 31, 2013 Real estate loans: Commercial non-owner occupied	Jun. 30, 2013 Real estate loans: Commercial non-owner occupied	Dec. 31, 2012 Real estate loans: Commercial non-owner occupied	Jun. 30, 2014 Real estate loans: Commercial non-owner occupied Canyon National	Jun. 30, 2014 Real estate loans: Multi-family	Dec. 31, 2013 Real estate loans: Multi-family	Jun. 30, 2013 Real estate loans: Multi-family	Dec. 31, 2012 Real estate loans: Multi-family	Jun. 30, 2014 Real estate loans: One-to-four family	Dec. 31, 2013 Real estate loans: One-to-four family	Jun. 30, 2013 Real estate loans: One-to-four family	Dec. 31, 2012 Real estate loans: One-to-four family	Jun. 30, 2014 Real estate loans: One-to-four family Palm Desert National	Jun. 30, 2014 Real estate loans: Construction	Dec. 31, 2013 Real estate loans: Construction	Jun. 30, 2013 Real estate loans: Construction	Jun. 30, 2014 Real estate loans: Land	Dec. 31, 2013 Real estate loans: Land	Jun. 30, 2013 Real estate loans: Land	Dec. 31, 2012 Real estate loans: Land	Jun. 30, 2014 Other loans	Dec. 31, 2013 Other loans	Jun. 30, 2013 Other loans	Dec. 31, 2012 Other loans
Loans Held for Investment
Total gross loans	$ 1,466,350,000	$ 1,243,252,000	$ 1,059,957,000									$ 319,541,000	$ 187,035,000	$ 146,240,000			$ 216,784,000	$ 221,089,000	$ 201,802,000			$ 15,115,000	$ 10,659,000	$ 5,820,000		$ 114,032,000	$ 87,517,000	$ 135,317,000		$ 360,288,000	$ 333,544,000	$ 295,767,000			$ 251,512,000	$ 233,689,000	$ 172,797,000		$ 132,020,000	$ 145,235,000	$ 84,672,000			$ 47,034,000	$ 13,040,000	$ 2,135,000	$ 6,271,000	$ 7,605,000	$ 10,438,000		$ 3,753,000	$ 3,839,000	$ 4,969,000
Less loans held for sale, net		(3,147,000)	(3,617,000)
Total gross loans held for investment	1,466,350,000	1,240,105,000	1,056,340,000
Less: Deferred loan origination costs (fees) and premiums (discounts), net	418,000	18,000	(910,000)
Less: Allowance for loan losses	(9,733,000)	(8,200,000)	(7,994,000)	(7,994,000)								(2,901,000)	(1,968,000)	(2,079,000)	(1,310,000)		(1,746,000)	(1,818,000)	(1,741,000)	(1,512,000)		(264,000)	(151,000)	(68,000)	(79,000)	(456,000)	(392,000)	(700,000)	(1,544,000)	(1,991,000)	(1,658,000)	(1,508,000)	(1,459,000)		(937,000)	(817,000)	(541,000)	(1,145,000)	(818,000)	(1,099,000)	(1,139,000)	(862,000)		(527,000)	(136,000)		(67,000)	(127,000)	(180,000)	(31,000)	(26,000)	(34,000)	(38,000)	(52,000)
Loans held for investment, net	1,457,035,000	1,231,923,000	1,047,436,000
Unaccreted mark-to-market discount						1,600,000	2,000,000	143,000
Mark-to-market premium										41,000
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	51,500,000
Unsecured loans limit to one borrower	30,900,000
Aggregate outstanding balance of loans to one borrower of secured credit	34,400,000
Purchased Credit Impaired
Total purchase credit impaired	1,637,000					1,626,000	11,000		0		0	85,000				85,000	559,000				559,000									982,000				982,000					11,000				11,000
Purchased credit impaired loans, nonaccrual status	$ 0