Business Combinations (Details Textual) - USD ($)		3 Months Ended
	Feb. 01, 2016	Mar. 31, 2016	Mar. 31, 2015
Business Acquisition [Line Items]
Purchase price of acquisition			$ 124,685,000
Goodwill from acquisition		$ 8,845,000
Bargain purchase gain		0	6,628,000
Cash paid			471,000
Fair value of common shares issued		0	124,214,000
Accretion of Discount			16,600,000
Core deposit intangibles			7,450,000
Premium of deposits from business combination			4,000,000
Business Combination, FHLB Advances Premium			$ 855,000
OCBB acquisition [Member]
Business Acquisition [Line Items]
Purchase price of acquisition	$ 55,872,000
Business Acquisition, Share Price	$ 0.5206
Business Acquisition, Share Price	$ 1.1641
Number of shares at acquisition	$ 2,459,408
American West Bank [Member]
Business Acquisition [Line Items]
Bargain purchase gain		$ 381,000
Simplicity bank [Member]
Business Acquisition [Line Items]
Business Acquisition, Share Price			$ 17.53
Number of shares at acquisition			$ 7,180,005
Bargain purchase gain			$ 7,345,000