Loans Held for Investment (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Accretable yield on purchased credit impaired
Balance at the beginning of period	$ 2,276
Accretion	(150)
Disposals and other	(75)
Change in accretable yield	605
Balance at the end of period	2,656
Canyon National
Accretable yield on purchased credit impaired
Balance at the beginning of period	2,029
Accretion	(122)
Change in accretable yield	157
Balance at the end of period	2,064
Palm Desert National
Accretable yield on purchased credit impaired
Balance at the beginning of period	247
Accretion	(28)
Disposals and other	(75)
Change in accretable yield	448
Balance at the end of period	$ 592