Consolidated Statements of Shareholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Preferred Stock Series A [Member]	Preferred Stock Series B [Member]	Common Stock [Member]	Surplus [Member]	ESOP Obligation [Member]	Accumulated Other Comprehensive Income [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2008	$ 0	$ 0	$ 679	$ 52,097	$ (18)	$ 1,697	$ (3,544)	$ 22,133	$ 73,044
Balance (in shares) at Dec. 31, 2008	0	0	6,788,885
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	0	0	0	0	0	0	0	4,599	4,599
Issuance of common stock, net of offering expenses	0	0	270	32,178	0	0	0	0	32,448
Issuance of common stock, net of offering expenses (in shares)	0	0	2,700,000
Issuance of Series A cumulative preferred stock and common stock warrants, net of costs of issuance	19,014	0	0	940	0	0	0	0	19,954
Issuance of series A cumulative preferred stock and common stock warrants, net of costs of issuance (in shares)	20,000	0	0
Dividends on preferred stock and accretion of common stock warrants	197	0	0	0	0	0	0	(1,175)	(978)
Dividends on common stock	0	0	0	0	0	0	0	(1,846)	(1,846)
Exercise of stock options	0	0	0	0	0	0	0	0	0
Exercise of stock options (in shares)	0	0	48
Tax benefit resulting from exercise of stock options, net adjustment	0	0	0	(3)	0	0	0	0	(3)
ESOP compensation expense	0	0	0	31	(199)	0	0	0	(168)
Stock compensation expense	0	0	0	20	0	0	0	0	20
Change in accumulated other comprehensive income	0	0	0	0	0	2,207	0	0	2,207
Balance at Dec. 31, 2009	19,211	0	949	85,263	(217)	3,904	(3,544)	23,711	129,277
Balance (in shares) at Dec. 31, 2009	20,000	0	9,488,933
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	0	0	0	0	0	0	0	5,780	5,780
Issuance of common and treasury stock due to overallotment, net of discount and offering expenses	0	0	38	4,472	0	0	258	0	4,768
Issuance of common and treasury stock due to overallotment, net of discount and offering expenses (in shares)	0	0	384,811
Dividends on preferred stock and accretion of common stock warrants	197	0	0	0	0	0	0	(1,198)	(1,001)
Dividends on common stock	0	0	0	0	0	0	0	(2,721)	(2,721)
Exercise of stock options	0	0	1	50	0	0	0	0	51
Exercise of stock options (in shares)	0	0	6,999
ESOP compensation expense	0	0	0	58	113	0	0	0	171
Stock compensation expense	0	0	0	50	0	0	0	0	50
Change in accumulated other comprehensive income	0	0	0	0	0	278	0	0	278
Balance at Dec. 31, 2010	19,408	0	988	89,893	(104)	4,182	(3,286)	25,572	136,653
Balance (in shares) at Dec. 31, 2010	20,000	0	9,880,743
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	0	0	0	0	0	0	0	4,473	4,473
Issuance of common stock for acquisitions	0	0	73	8,765	0	0	0	0	8,838
Issuance of common stock for acquisitions (in shares)	0	0	725,000
Dividends on preferred stock and accretion of common stock warrants	592	0	0	0	0	0	0	(1,242)	(650)
Redemption of Series A Preferred Stock	(20,000)	0	0	0	0	0	0	0	(20,000)
Redemption of Series A Preferred Stock (in shares)	(20,000)	0	0
Issuance of Series B Preferred Stock	0	32,000	0	0	0	0	0	0	32,000
Issuance of Series B Preferred Stock (in shares)	0	32,000	0
Dividends on Series B Preferred Stock	0	0	0	0	0	0	0	(560)	(560)
Dividends on common stock	0	0	0	0	0	0	0	(2,776)	(2,776)
Exercise of stock options	0	0	1	66	0	0	0	0	67
Exercise of stock options (in shares)	0	0	10,240
Tax benefit resulting from exercise of stock options, net adjustment	0	0	0	1	0	0	0	0	1
ESOP compensation expense	0	0	0	42	104	0	0	0	146
Stock option and restricted stock compensation expense	0	0	0	75	0	0	0	0	75
Change in accumulated other comprehensive income	0	0	0	0	0	3,570	0	0	3,570
Balance at Dec. 31, 2011	$ 0	$ 32,000	$ 1,062	$ 98,842	$ 0	$ 7,752	$ (3,286)	$ 25,467	$ 161,837
Balance (in shares) at Dec. 31, 2011	0	32,000	10,615,983