Consolidated Statements of Shareholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Preferred Stock [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, 2009	$ 19,211	$ 949	$ 85,263	$ (217)	$ 3,904	$ (3,544)	$ 23,711	$ 129,277
Balance (in shares) at Dec. 31, 2009	20,000	9,488,933
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings							5,780	5,780
Issuance of common and treasury stock due to overallotment, net of discount and offering expenses	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	384,811
Dividends on preferred stock and accretion of common stock warrants	197	0	0	0	0	0	(1,198)	(1,001)
Dividends on common stock	0	0	0	0	0	0	(2,721)	(2,721)
Exercise of stock options	0	1	50	0	0	0	0	51
Exercise of stock options (in shares)	0	6,999
ESOP compensation expense	0	0	58	113	0	0	0	171
Stock compensation expense	0	0	50	0	0	0	0	50
Change in accumulated other comprehensive income	0	0	0	0	278	0	0	278
Balance at Dec. 31, 2010	19,408	988	89,893	(104)	4,182	(3,286)	25,572	136,653
Balance (in shares) at Dec. 31, 2010	20,000	9,880,743
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings							4,473	4,473
Issuance of common stock for acquisitions	0	73	8,765	0	0	0	0	8,838
Issuance of common stock for acquisitions (in shares)	0	725,000
Dividends on preferred stock and accretion of common stock warrants	592	0	0	0	0	0	(1,242)	(650)
Redemption of Series A Preferred Stock	(20,000)	0	0	0	0	0	0	(20,000)
Redemption of Series A Preferred Stock (in shares)	(20,000)	0
Issuance of Series B Preferred Stock	32,000	0	0	0	0	0	0	32,000
Issuance of Series B Preferred Stock (in shares)	32,000	0
Dividends on Series B Preferred Stock	0	0	0	0	0	0	(560)	(560)
Dividends on common stock	0	0	0	0	0	0	(2,776)	(2,776)
Exercise of stock options	0	1	66	0	0	0	0	67
Exercise of stock options (in shares)	0	10,240
Tax benefit resulting from exercise of stock options, net adjustment	0	0	1	0	0	0	0	1
ESOP compensation expense	0	0	42	104	0	0	0	146
Stock option and restricted stock compensation expense	0	0	75	0	0	0	0	75
Change in accumulated other comprehensive income	0	0	0	0	3,570	0	0	3,570
Balance at Dec. 31, 2011	32,000	1,062	98,842	0	7,752	(3,286)	25,467	161,837
Balance (in shares) at Dec. 31, 2011	32,000	10,615,983
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings							9,642	9,642
Issuance of common stock for acquisitions		76	11,454	0	0	0	0	11,530
Issuance of common stock for acquisitions (in shares)	0	756,511
Issuance of Series C preferred stock for acquisitions	9,997	0	0	0	0	0	0	9,997
Issuance of Series C preferred stock for acquisitions (in shares)	99,971	0
Dividends on Series B Preferred Stock	0	0	0	0	0	0	(1,547)	(1,547)
Dividends on common stock	0	0	0	0	0	0	(2,933)	(2,933)
Exercise of stock options	0	1	99	0	0	0	0	100
Exercise of stock options (in shares)	0	14,117
Tax benefit resulting from exercise of stock options, net adjustment	0	0	1	0	0	0	0	1
Stock option and restricted stock compensation expense	0	0	207	0	0	0	0	207
Change in accumulated other comprehensive income	0	0	0	0	407	0	0	407
Balance at Dec. 31, 2012	$ 41,997	$ 1,139	$ 110,603	$ 0	$ 8,159	$ (3,286)	$ 30,629	$ 189,241
Balance (in shares) at Dec. 31, 2012	131,971	11,386,611