Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:
Net earnings	$ 14,176,000	$ 9,642,000	$ 4,473,000
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation	5,568,000	3,799,000	3,265,000
Accretion of purchase accounting adjustments	(5,869,000)	(2,067,000)	(752,000)
Provision for loan losses	3,050,000	2,050,000	3,925,000
Deferred tax expense (benefit)	2,828,000	1,651,000	(491,000)
Amortization of premiums on securities, net	4,473,000	1,878,000	910,000
Amortization of other investments	13,000	15,000	14,000
Net loss on sale of other real estate	190,000	163,000	66,000
Net write down of other real estate owned	457,000	582,000	476,000
Net loss on sale/disposal of premises and equipment	96,000	6,000	126,000
Stock compensation expense	308,000	150,000	13,000
Restricted stock expense	21,000	57,000	62,000
Gain on sale and liquidation of securities available-for-sale	(234,000)	(204,000)	(99,000)
Change in accrued interest receivable	(1,000)	745,000	(331,000)
Change in accrued interest payable	(201,000)	(181,000)	(120,000)
Change in other assets and liabilities, net	1,009,000	(339,000)	1,667,000
Net cash provided by operating activities	25,884,000	17,947,000	13,204,000
Cash flows from investing activities, net of effect of purchase acquisitions in 2011 and 2012:
Net change in time deposits in other banks	881,000	1,000	5,164,000
Proceeds from maturities and calls of securities available-for-sale	72,728,000	146,019,000	81,030,000
Proceeds from maturities and calls of securities held-to-maturity	22,946,000	24,340,000	900,000
Proceeds from sale of securities available-for-sale	55,879,000	6,558,000	3,895,000
Purchases of securities available-for-sale	(68,043,000)	(100,384,000)	(149,332,000)
Purchases of securities held-to-maturity	(26,382,000)	(38,160,000)	(101,493,000)
Proceeds from redemption of other investments	1,600,000	500,000	82,000
Purchases of other investments	(3,220,000)	(189,000)	(449,000)
Net change in loans	(82,340,000)	(41,335,000)	(49,875,000)
Purchases of premises and equipment	(14,264,000)	(10,245,000)	(3,656,000)
Proceeds from sale of premises and equipment	69,000	0	9,000
Proceeds from sale of other real estate owned	1,215,000	555,000	541,000
Net cash (used in) provided by investing activities	(38,931,000)	(5,296,000)	(47,506,000)
Cash flows from financing activities, net of effect of purchase acquisitions in 2011 and 2012:
Change in deposits	(32,455,000)	(12,432,000)	15,041,000
Change in securities sold under agreements to repurchase	12,469,000	(5,539,000)	2,252,000
Borrowings on Federal Home Loan Bank advances	25,000,000	0	0
Repayments of Federal Home Loan Bank advances	(57,000)	0	0
Repayments of notes payable	(1,000,000)	0	0
Issuance of Series B preferred stock	0	0	32,000,000
Redemption of Series A preferred stock	0	0	(20,000,000)
Proceeds from exercise of stock options	69,000	100,000	67,000
Tax benefit due to exercise of stock options	4,000	1,000	1,000
Tax benefit from issuance of restricted stock	14,000	0	0
Payment of dividends on preferred stock	(1,519,000)	(1,579,000)	(938,000)
Payment of dividends on common stock	(3,320,000)	(2,932,000)	(2,725,000)
Net cash (used in) provided by financing activities	(795,000)	(22,381,000)	25,698,000
Net increase (decrease) in cash and cash equivalents	(13,842,000)	(9,730,000)	(8,604,000)
Cash and cash equivalents, beginning of year	73,573,000	83,303,000	91,907,000
Cash and cash equivalents, end of year	59,731,000	73,573,000	83,303,000
Supplemental cash flow information:
Interest paid	6,534,000	5,978,000	5,608,000
Income taxes paid	3,500,000	2,785,000	835,000
Noncash investing and financing activities:
Common stock issued in acquisition	0	11,530,000	8,838,000
Accretion of warrants	0	0	592,000
Accrued common stock dividends	913,000	745,000	744,000
Accrued preferred stock dividends	180,000	368,000	400,000
Net change in loan to ESOP	0	0	104,000
Change in unrealized gains/losses on securities available-for-sale, net of tax	(8,265,000)	407,000	3,570,000
Transfer of loans to other real estate	1,053,000	879,000	7,319,000
Financed sales of other real estate	0	290,000	73,000
Jefferson Bank [Member]
Cash flows from investing activities, net of effect of purchase acquisitions in 2011 and 2012:
Net cash associated with acquisition	0	0	93,800,000
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	0	19,708,000
Beacon Federal [Member]
Cash flows from investing activities, net of effect of purchase acquisitions in 2011 and 2012:
Net cash associated with acquisition	0	0	52,170,000
Peoples State Bank [Member]
Cash flows from investing activities, net of effect of purchase acquisitions in 2011 and 2012:
Net cash associated with acquisition	$ 0	$ 7,044,000	$ 0