Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Note 3 - Loans - Allowance for Loan Losses by Portfolio Segment and Based on Impairment Evaluation Method (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Mar. 31, 2017	Dec. 31, 2016
Loans				$ 2,272,778	$ 2,305,375
Loans collectively evaluated for impairment				2,266,099	2,298,482
Loans individually evaluated for impairment				6,087	6,269
Balance	$ 24,007	$ 22,441	$ 22,441
Provision for loan losses	900	500	3,000
Charge-offs	(605)		(2,493)
Recoveries	179		1,059
Balance	24,481		24,007
Allowance for loans collectively evaluated for impairment				23,293	22,740
Allowance for loans individually evaluated for impairment				1,188	1,267
Allowance for loans acquired with deteriorated credit quality	24,481	22,441	24,007	24,481	24,007
Receivables Acquired with Deteriorated Credit Quality [Member]
Loans				592	624
Balance
Balance
Allowance for loans acquired with deteriorated credit quality
Commercial and Industrial Portfolio Segment [Member]
Loans				736,633	736,841
Loans collectively evaluated for impairment				733,790	734,139
Loans individually evaluated for impairment				2,843	2,682
Balance	10,483	8,645	8,645
Provision for loan losses	789		2,775
Charge-offs	(450)		(1,216)
Recoveries	45		279
Balance	10,867		10,483
Allowance for loans collectively evaluated for impairment				9,737	9,276
Allowance for loans individually evaluated for impairment				1,130	1,207
Allowance for loans acquired with deteriorated credit quality	10,483	8,645	10,483	10,867	10,483
Commercial and Industrial Portfolio Segment [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Loans					20
Balance
Balance
Allowance for loans acquired with deteriorated credit quality
Construction and Development Excluding Undeveloped Land Portfolio Segment [Member]
Loans				165,832	192,348
Loans collectively evaluated for impairment				165,388	191,810
Loans individually evaluated for impairment				444	538
Balance	1,923	1,760	1,760
Provision for loan losses	202		275
Charge-offs			(133)
Recoveries			21
Balance	2,125		1,923
Allowance for loans collectively evaluated for impairment				2,125	1,923
Allowance for loans individually evaluated for impairment
Allowance for loans acquired with deteriorated credit quality	1,923	1,760	1,923	2,125	1,923
Construction and Development Excluding Undeveloped Land Portfolio Segment [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Loans
Balance
Balance
Allowance for loans acquired with deteriorated credit quality
Undevelopment Land Portfolio Segment [Member]
Loans				21,207	21,496
Loans collectively evaluated for impairment				20,733	21,022
Loans individually evaluated for impairment				474	474
Balance	684	814	814
Provision for loan losses	(32)		(130)
Charge-offs
Recoveries
Balance	652		684
Allowance for loans collectively evaluated for impairment				652	683
Allowance for loans individually evaluated for impairment					1
Allowance for loans acquired with deteriorated credit quality	684	814	684	652	684
Undevelopment Land Portfolio Segment [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Loans
Balance
Balance
Allowance for loans acquired with deteriorated credit quality
Real Estate Mortgage Portfolio Segment [Member]
Loans				1,314,397	1,319,520
Loans collectively evaluated for impairment				1,311,537	1,316,400
Loans individually evaluated for impairment				2,268	2,516
Balance	10,573	10,875	10,875
Provision for loan losses	(75)		(68)
Charge-offs	(34)		(576)
Recoveries	27		342
Balance	10,491		10,573
Allowance for loans collectively evaluated for impairment				10,491	10,573
Allowance for loans individually evaluated for impairment
Allowance for loans acquired with deteriorated credit quality	10,573	10,875	10,573	10,491	10,573
Real Estate Mortgage Portfolio Segment [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Loans				592	604
Balance
Balance
Allowance for loans acquired with deteriorated credit quality
Consumer Portfolio Segment [Member]
Loans				34,709	35,170
Loans collectively evaluated for impairment				34,651	35,111
Loans individually evaluated for impairment				58	59
Balance	344	347	347
Provision for loan losses	16		148
Charge-offs	(121)		(568)
Recoveries	107		417
Balance	346		344
Allowance for loans collectively evaluated for impairment				288	285
Allowance for loans individually evaluated for impairment				58	59
Allowance for loans acquired with deteriorated credit quality	344	$ 347	344	346	344
Consumer Portfolio Segment [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Loans
Balance
Balance
Allowance for loans acquired with deteriorated credit quality