Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Cash flows from operating activities:
Net earnings	$ 9,642,000	$ 4,473,000	$ 5,780,000
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation	3,799,000	3,265,000	3,300,000
Amortization (accretion) of purchase accounting adjustments	(2,067,000)	(752,000)	98,000
Provision for loan losses	2,050,000	3,925,000	5,020,000
Deferred tax expense (benefit)	1,651,000	(491,000)	(1,033,000)
Amortization of premiums on securities, net	1,878,000	910,000	1,226,000
Amortization of other investments	15,000	14,000	0
Net loss on sale of other real estate	163,000	66,000	150,000
Net write down of other real estate owned	582,000	476,000	241,000
Net loss/disposal on sale of premises and equipment	6,000	126,000	132,000
Stock compensation expense	150,000	13,000	6,000
Restricted stock expense	57,000	62,000	44,000
Gain on sale and liquidation of securities available-for-sale	(204,000)	(99,000)	(3,000)
Change in accrued interest receivable	745,000	(331,000)	180,000
Change in accrued interest payable	(181,000)	(120,000)	(149,000)
Write-down of goodwill	136,000	0	0
Change in other assets and liabilities, net	(475,000)	1,667,000	2,271,000
Net cash provided by operating activities	17,947,000	13,204,000	17,263,000
Cash flows from investing activities, net of effect of purchase acquisitions in 2011 and 2012:
Net change in time deposits in other banks	1,000	5,164,000	20,958,000
Proceeds from liquidation of equity security included in securities available-for-sale	0	0	75,000
Proceeds from maturities and calls of securities available-for-sale	146,019,000	81,030,000	33,242,000
Proceeds from maturities and calls of securities held-to-maturity	24,340,000	900,000	1,455,000
Proceeds from sale of securities available-for-sale	6,558,000	3,895,000	0
Purchases of securities available-for-sale	(100,384,000)	(149,332,000)	(26,107,000)
Purchases of securities held-to-maturity	(38,160,000)	(101,493,000)	0
Proceeds from redemption of other investments	500,000	82,000	0
Purchases of other investments	(189,000)	(449,000)	(173,000)
Net change in loans	(41,335,000)	(49,875,000)	(1,050,000)
Purchases of premises and equipment	(10,245,000)	(3,656,000)	(1,291,000)
Proceeds from sale of premises and equipment	0	9,000	3,000
Proceeds from sale of other real estate owned	555,000	541,000	766,000
Purchase of other real estate	0	0	(450,000)
Net cash (used in) provided by investing activities	(5,296,000)	(47,506,000)	27,428,000
Cash flows from financing activities, net of effect of purchase acquisitions in 2011 and 2012:
Change in deposits	(12,432,000)	15,041,000	27,487,000
Change in securities sold under agreements to repurchase	(5,539,000)	2,252,000	(3,233,000)
Change in federal funds purchased	0	0	(1,700,000)
Issuance of Series B preferred stock	0	32,000,000	0
Redemption of Series A preferred stock	0	(20,000,000)	0
Issuance of common stock and treasury stock, net of offering expenses	0	0	4,768,000
Proceeds from exercise of stock options	100,000	67,000	51,000
Tax benefit due to exercise of stock options	1,000	1,000	0
Payment of dividends on preferred stock	(1,579,000)	(938,000)	(1,001,000)
Payment of dividends on common stock	(2,932,000)	(2,725,000)	(2,507,000)
Net cash (used in) provided by financing activities	(22,381,000)	25,698,000	23,865,000
Net increase (decrease) in cash and cash equivalents	(9,730,000)	(8,604,000)	68,556,000
Cash and cash equivalents, beginning of year	83,303,000	91,907,000	23,351,000
Cash and cash equivalents, end of year	73,573,000	83,303,000	91,907,000
Supplemental cash flow information:
Interest paid	5,978,000	5,608,000	7,544,000
Income taxes paid	2,785,000	835,000	1,051,000
Noncash investing and financing activities:
Common stock issued in acquisition	11,530,000	8,838,000	0
Accretion of warrants	0	592,000	197,000
Change in accrued common stock dividends	1,000	51,000	218,000
Change in accrued preferred stock dividends	(32,000)	272,000	0
Net change in loan to ESOP	0	104,000	113,000
Change in unrealized gains/losses on securities available-for-sale, net of tax	407,000	3,570,000	278,000
Transfer of loans to other real estate	879,000	7,319,000	1,222,000
Financed sales of other real estate	290,000	73,000	30,000
Jefferson Bank [Member]
Cash flows from investing activities, net of effect of purchase acquisitions in 2011 and 2012:
Net cash associated with acquisition	0	93,800,000	0
First Louisiana National Bank [Member]
Cash flows from investing activities, net of effect of purchase acquisitions in 2011 and 2012:
Net cash associated with acquisition	0	19,708,000	0
Beacon Federal [Member]
Cash flows from investing activities, net of effect of purchase acquisitions in 2011 and 2012:
Net cash associated with acquisition	0	52,170,000	0
Peoples State Bank [Member]
Cash flows from investing activities, net of effect of purchase acquisitions in 2011 and 2012:
Net cash associated with acquisition	$ 7,044,000	$ 0	$ 0