Note 5 - Allowance for Loan Losses (Details) - Allowance for Credit Losses by Impairment Methodology (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Allowance for loan losses:
Loans, Balance	$ 818,765,000		$ 820,384,000
Real Estate - Residential Mortgage [Member] | Allowance for Loan Losses [Member]
Allowance for loan losses:
Allowance for loan losses, Balance	2,355,000	2,358,000
Allowance for loan losses, Ending balance: individually evaluated for impairment	377,000		390,000
Allowance for loan losses, Ending balance: collectively evaluated for impairment	1,929,000		1,965,000
Allowance for loan losses, Ending balance: purchase credit impaired	2,238,000
Loans charged off	(73,000)	(473,000)
Recoveries of loans previously charged off	9,000	79,000
Provision charged to operations	15,000	332,000
Allowance for loan losses, Balance	2,306,000	2,296,000
Real Estate - Residential Mortgage [Member] | Evaluated Loans [Member]
Allowance for loan losses:
Ending balance: acquired loans - purchase credit impaired			2,694,000
Loans, Balance	182,571,000		188,455,000
Loans, Ending balance: individually evaluated for impairment	2,039,000		2,601,000
Loans, Ending balance: collectively evaluated for impairment	178,294,000		183,160,000
Real Estate Construction [Member] | Allowance for Loan Losses [Member]
Allowance for loan losses:
Allowance for loan losses, Balance		424,000	434,000
Allowance for loan losses, Ending balance: individually evaluated for impairment			0
Allowance for loan losses, Ending balance: collectively evaluated for impairment	434,000		434,000
Allowance for loan losses, Ending balance: purchase credit impaired	608,000
Provision charged to operations		(79,000)
Allowance for loan losses, Balance	434,000	345,000	434,000
Real Estate Construction [Member] | Evaluated Loans [Member]
Allowance for loan losses:
Ending balance: acquired loans - purchase credit impaired			771,000
Loans, Balance	6,402,000		5,810,000
Loans, Ending balance: collectively evaluated for impairment	5,794,000		5,039,000
Commercial, Financial And Agricultural [Member] | Allowance for Loan Losses [Member]
Allowance for loan losses:
Allowance for loan losses, Balance	7,805,000	9,824,000
Allowance for loan losses, Ending balance: individually evaluated for impairment	635,000		639,000
Allowance for loan losses, Ending balance: collectively evaluated for impairment	7,205,000		7,166,000
Allowance for loan losses, Ending balance: purchase credit impaired	27,939,000
Loans charged off		(2,134,000)
Recoveries of loans previously charged off	35,000	8,000
Provision charged to operations		67,000
Allowance for loan losses, Balance	7,840,000	7,765,000
Commercial, Financial And Agricultural [Member] | Evaluated Loans [Member]
Allowance for loan losses:
Ending balance: acquired loans - purchase credit impaired			28,602,000
Loans, Balance	295,208,000		288,593,000
Loans, Ending balance: individually evaluated for impairment	3,400,000		3,437,000
Loans, Ending balance: collectively evaluated for impairment	263,869,000		256,554,000
Equity Lines [Member] | Allowance for Loan Losses [Member]
Allowance for loan losses:
Allowance for loan losses, Balance		885,000	892,000
Allowance for loan losses, Ending balance: individually evaluated for impairment			0
Allowance for loan losses, Ending balance: collectively evaluated for impairment	892,000		892,000
Allowance for loan losses, Ending balance: purchase credit impaired	346,000
Loans charged off		(37,000)
Recoveries of loans previously charged off		27,000
Provision charged to operations		(12,000)
Allowance for loan losses, Balance	892,000	863,000	892,000
Equity Lines [Member] | Evaluated Loans [Member]
Allowance for loan losses:
Ending balance: acquired loans - purchase credit impaired			332,000
Loans, Balance	49,891,000		50,795,000
Loans, Ending balance: individually evaluated for impairment	34,000		131,000
Loans, Ending balance: collectively evaluated for impairment	49,511,000		50,332,000
Consumer [Member] | Allowance for Loan Losses [Member]
Allowance for loan losses:
Allowance for loan losses, Balance	273,000	283,000
Allowance for loan losses, Ending balance: individually evaluated for impairment	14,000		14,000
Allowance for loan losses, Ending balance: collectively evaluated for impairment	300,000		259,000
Allowance for loan losses, Ending balance: purchase credit impaired	81,000
Loans charged off	(105,000)	(184,000)
Recoveries of loans previously charged off	146,000	47,000
Provision charged to operations		122,000
Allowance for loan losses, Balance	314,000	268,000
Consumer [Member] | Evaluated Loans [Member]
Allowance for loan losses:
Ending balance: acquired loans - purchase credit impaired			121,000
Loans, Balance	8,270,000		9,007,000
Loans, Ending balance: individually evaluated for impairment	93,000		93,000
Loans, Ending balance: collectively evaluated for impairment	8,096,000		8,793,000
Consumer Finance [Member] | Allowance for Loan Losses [Member]
Allowance for loan losses:
Allowance for loan losses, Balance	23,093,000	22,133,000
Allowance for loan losses, Ending balance: individually evaluated for impairment			0
Allowance for loan losses, Ending balance: collectively evaluated for impairment	23,122,000		23,093,000
Loans charged off	(4,488,000)	(3,393,000)
Recoveries of loans previously charged off	1,022,000	894,000
Provision charged to operations	3,495,000	2,750,000
Allowance for loan losses, Balance	23,122,000	22,384,000
Consumer Finance [Member] | Evaluated Loans [Member]
Allowance for loan losses:
Loans, Balance	276,423,000		277,724,000
Loans, Ending balance: collectively evaluated for impairment	276,423,000		277,724,000
Allowance for Loan Losses [Member]
Allowance for loan losses:
Allowance for loan losses, Balance	34,852,000	35,907,000
Allowance for loan losses, Ending balance: individually evaluated for impairment	1,026,000		1,043,000
Allowance for loan losses, Ending balance: collectively evaluated for impairment	33,882,000		33,809,000
Allowance for loan losses, Ending balance: purchase credit impaired	31,212,000
Loans charged off	(4,666,000)	(6,221,000)
Recoveries of loans previously charged off	1,212,000	1,055,000
Provision charged to operations	3,510,000	3,180,000
Allowance for loan losses, Balance	34,908,000	33,921,000
Evaluated Loans [Member]
Allowance for loan losses:
Ending balance: acquired loans - purchase credit impaired			32,520,000
Loans, Balance	818,765,000		820,384,000
Loans, Ending balance: individually evaluated for impairment	5,566,000		6,262,000
Loans, Ending balance: collectively evaluated for impairment	$ 781,987,000		$ 781,602,000