Federal Deposit Insurance Corporation ("FDIC") Acquisitions (Details) (USD $)	1 Months Ended		1 Months Ended
	Apr. 30, 2012 Palm Desert National branch	Apr. 27, 2012 Palm Desert National	Feb. 28, 2011 Canyon National branch	Feb. 11, 2011 Canyon National
Palm Desert National Bank Acquisition
Number of branches acquired	1		3
Fair value of assets acquired and received and liabilities assumed
Assets		$ 120,900,000		$ 208,900,000
Loans		63,800,000		149,700,000
FDIC receivable				16,100,000
Cash and cash equivalents		39,500,000		13,200,000
Other real estate owned ("OREO");		11,500,000		12,000,000
Investment securities		1,500,000		12,800,000
Core deposit intangibles		840,000		2,300,000
Other assets		3,800,000		1,500,000
FHLB and Federal Reserve Bank stock				1,300,000
Liabilities		118,000,000		206,600,000
Deposits				204,700,000
Deposit transaction accounts		50,100,000
Retail certificates of deposit		30,800,000
Whole sale certificates of deposits		34,100,000
Deferred tax liability		2,400,000		1,900,000
Other liabilities		$ 578,000		$ 39,000