Loans Held for Investment (Details) (USD $)					3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2014 Maximum	Mar. 31, 2014 Canyon National	Mar. 31, 2014 Palm Desert National	Mar. 31, 2014 San Diego Trust Bank	Jun. 25, 2013 San Diego Trust Bank	Mar. 31, 2014 FAB	Mar. 15, 2013 FAB	Mar. 31, 2014 Business loans: Commercial and industrial	Dec. 31, 2013 Business loans: Commercial and industrial	Mar. 31, 2013 Business loans: Commercial and industrial	Dec. 31, 2012 Business loans: Commercial and industrial	Mar. 31, 2014 Business loans: Commercial and industrial Canyon National	Mar. 31, 2014 Business loans: Commercial owner occupied	Dec. 31, 2013 Business loans: Commercial owner occupied	Mar. 31, 2013 Business loans: Commercial owner occupied	Dec. 31, 2012 Business loans: Commercial owner occupied	Mar. 31, 2014 Business loans: Commercial owner occupied Canyon National	Mar. 31, 2014 Business loans: SBA	Dec. 31, 2013 Business loans: SBA	Mar. 31, 2013 Business loans: SBA	Dec. 31, 2012 Business loans: SBA	Mar. 31, 2014 Business loans: Warehouse facilities	Dec. 31, 2013 Business loans: Warehouse facilities	Mar. 31, 2013 Business loans: Warehouse facilities	Dec. 31, 2012 Business loans: Warehouse facilities	Mar. 31, 2014 Real estate loans: Commercial non-owner occupied	Dec. 31, 2013 Real estate loans: Commercial non-owner occupied	Mar. 31, 2013 Real estate loans: Commercial non-owner occupied	Dec. 31, 2012 Real estate loans: Commercial non-owner occupied	Mar. 31, 2014 Real estate loans: Commercial non-owner occupied Canyon National	Mar. 31, 2014 Real estate loans: Multi-family	Dec. 31, 2013 Real estate loans: Multi-family	Mar. 31, 2013 Real estate loans: Multi-family	Dec. 31, 2012 Real estate loans: Multi-family	Mar. 31, 2014 Real estate loans: One-to-four family	Dec. 31, 2013 Real estate loans: One-to-four family	Mar. 31, 2013 Real estate loans: One-to-four family	Dec. 31, 2012 Real estate loans: One-to-four family	Mar. 31, 2014 Real estate loans: One-to-four family Palm Desert National	Mar. 31, 2014 Real estate loans: Construction	Dec. 31, 2013 Real estate loans: Construction	Mar. 31, 2014 Real estate loans: Land	Dec. 31, 2013 Real estate loans: Land	Mar. 31, 2013 Real estate loans: Land	Dec. 31, 2012 Real estate loans: Land	Mar. 31, 2014 Other loans	Dec. 31, 2013 Other loans	Mar. 31, 2013 Other loans	Dec. 31, 2012 Other loans
Loans Held for Investment
Total gross loans	$ 1,325,469,000	$ 1,243,252,000	$ 945,991,000									$ 271,877,000	$ 187,035,000	$ 140,592,000			$ 223,848,000	$ 221,089,000	$ 166,571,000			$ 11,045,000	$ 10,659,000	$ 5,116,000		$ 81,033,000	$ 87,517,000	$ 138,935,000		$ 333,490,000	$ 333,544,000	$ 256,015,000			$ 223,200,000	$ 233,689,000	$ 139,100,000		$ 141,469,000	$ 145,235,000	$ 87,109,000			$ 29,857,000	$ 13,040,000	$ 6,170,000	$ 7,605,000	$ 7,863,000		$ 3,480,000	$ 3,839,000	$ 4,690,000
Less loans held for sale, net		(3,147,000)	(3,643,000)
Total gross loans held for investment	1,325,469,000	1,240,105,000	942,348,000
Less: Deferred loan origination COSTS (fees) and premiums (discounts), net	(97,000)	18,000	(520,000)
Less: Allowance for loan losses	(8,685,000)	(8,200,000)	(7,994,000)	(7,994,000)								(2,365,000)	(1,968,000)	(2,296,000)	(1,310,000)		(1,754,000)	(1,818,000)	(1,665,000)	(1,512,000)		(179,000)	(151,000)	(50,000)	(79,000)	(376,000)	(392,000)	(730,000)	(1,544,000)	(1,857,000)	(1,658,000)	(1,403,000)	(1,459,000)		(805,000)	(817,000)	(506,000)	(1,145,000)	(919,000)	(1,099,000)	(1,174,000)	(862,000)		(323,000)	(136,000)	(81,000)	(127,000)	(121,000)	(31,000)	(26,000)	(34,000)	(49,000)	(52,000)
Loans held for investment, net	1,316,687,000	1,231,923,000	933,834,000
Unaccreted mark-to-market discount						1,800,000	2,200,000	115,000
Mark-to-market premium										53,000
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	50,300,000
Unsecured loans limit to one borrower	30,200,000
Aggregate outstanding balance of loans to one borrower of secured credit	34,500,000
Purchased Credit Impaired
Total purchase credit impaired	1,957,000					1,943,000	14,000		0		0	84,000				84,000	866,000				866,000									993,000				993,000					14,000				14,000
Purchased credit impaired loans, nonaccrual status	$ 302,000