Business Combination (Details 1) (USD $) In Thousands, unless otherwise specified	Jul. 15, 2013 Valley [Member]	Jan. 09, 2013 NCB [Member]
Summary of the net assets purchased and the estimated fair value adjustments
Cost basis of net assets on acquisition date	$ 29,720	$ 6,113
Consideration transferred	(46,323)	(2,967)
Fair value adjustments:
Other interest earning deposits	162	7
Investment securities	0	(2)
Purchased non-covered loans, net	(3,003)	(3,299)
Other real estate owned	0	(1,301)
Premises and equipment	1,837	(69)
Core deposit intangible	916	156
Prepaid expenses and other assets	323	(479)
Deferred income tax, net	(125)	2,873
Certificates of deposit	(9)	(11)
Accrued expenses and other liabilities	149	(622)
(Goodwill) bargain purchase gain recognized from the acquisition	$ (16,353)	$ 399