Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]
Beginning balance at Dec. 31, 2011	$ 54,989	$ 1	$ 75	$ (431)	$ 2,341	$ 53,003
Beginning balance (shares) at Dec. 31, 2011		10,361,849
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss) Available to Common Stockholders, Basic	9,705	0	0	0	0
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	272	0	0	0	272	0
Stock Issued During Period, Shares, Share-based Compensation, Gross		86,990
Stock Issued During Period, Value, Restricted Stock Award, Gross	55	0	55	0	0	0
Stock Issued During Period, Shares, New Issues		5,000,000
Stock Issued During Period, Value, New Issues	23,947	1	23,946	0	0	0
Dividends, Common Stock, Cash	(982)	0	0	0	0	(982)
Ending balance at Dec. 31, 2012	87,986	2	24,076	(431)	2,613	61,726
Ending balance (shares) at Dec. 31, 2012		15,448,839
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss) Available to Common Stockholders, Basic	20,342	0	0	0	0
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	(2,521)	0	0	0	(2,521)	0
Stock Issued During Period, Shares, Share-based Compensation, Gross		10,476
Stock Issued During Period, Value, Restricted Stock Award, Gross	133	0	133	0	0	0
Stock Issued During Period, Shares, New Issues		750,000
Stock Issued During Period, Value, New Issues	3,591	0	3,591	0	0	0
Dividends, Common Stock, Cash	(1,944)	0	0	0	0	(1,944)
Ending balance at Dec. 31, 2013	107,587	2	27,800	(431)	92	80,124
Ending balance (shares) at Dec. 31, 2013	16,209,315	16,209,315
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss) Available to Common Stockholders, Basic	41,013	0	0	0	0	41,013
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	3,919	0	0	0	3,919	0
Stock Issued During Period, Shares, Share-based Compensation, Gross		95,099
Stock Issued During Period, Value, Restricted Stock Award, Gross	539	0	539	0	0	0
Stock Issued During Period, Shares, New Issues		4,600,000
Stock Issued During Period, Value, New Issues	54,041	0	54,041	0	0	0
Dividends, Common Stock, Cash	(3,336)	0	0	0	0	(3,336)
Ending balance at Dec. 31, 2014	$ 203,763	$ 2	$ 82,380	$ (431)	$ 4,011	$ 117,801
Ending balance (shares) at Dec. 31, 2014	20,904,414	20,904,414