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 5 - Loans - Allowance for Loan Losses by Portfolio Segment and Based on Impairment Evaluation Method (Details) - USD ($) $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Loans																$ 2,305,375	$ 2,033,007	$ 1,868,550
Loans individually evaluated for impairment																6,269	8,753	11,551
Loans collectively evaluated for impairment																2,298,482	2,023,432	1,855,837
Balance				$ 22,441				$ 24,920				$ 28,522	$ 22,441	$ 24,920	$ 28,522
Provision (credit) for loan losses	$ 500	$ 1,250	$ 750	500	$ 750					$ (2,100)	$ 1,350	350	3,000	750	(400)
Charge-offs													(2,493)	(5,381)	(4,244)
Recoveries													1,059	2,152	1,042
Balance	24,007				22,441				24,920				24,007	22,441	24,920
Allowance for loans individually evaluated for impairment																1,267	544	1,376
Allowance for loans collectively evaluated for impairment																22,740	21,897	23,544
Allowance for loans acquired with deteriorated credit quality	24,007			22,441	22,441			24,920	24,920			28,522	24,007	22,441	24,920	24,007	22,441	24,920
Receivables Acquired with Deteriorated Credit Quality [Member]
Loans																624	822	1,162
Balance
Balance
Allowance for loans acquired with deteriorated credit quality
Commercial and Industrial Portfolio Segment [Member]
Loans																736,841	644,398	571,754
Loans individually evaluated for impairment																2,682	4,635	7,239
Loans collectively evaluated for impairment																734,139	639,760	564,443
Balance				8,645				11,819				7,644	8,645	11,819	7,644
Provision (credit) for loan losses													2,775	793	4,593
Charge-offs													(1,216)	(4,065)	(661)
Recoveries													279	98	243
Balance	10,483				8,645				11,819				10,483	8,645	11,819
Allowance for loans individually evaluated for impairment																1,207	268	1,029
Allowance for loans collectively evaluated for impairment																9,276	8,377	10,790
Allowance for loans acquired with deteriorated credit quality	10,483			8,645	8,645			11,819	11,819			7,644	8,645	8,645	11,819	10,483	8,645	11,819
Commercial and Industrial Portfolio Segment [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Loans																20	3	72
Balance
Balance
Allowance for loans acquired with deteriorated credit quality
Construction and Development Excluding Undeveloped Land Portfolio Segment [Member]
Loans																192,348	134,482	95,733
Loans individually evaluated for impairment																538		516
Loans collectively evaluated for impairment																191,810	134,160	94,603
Balance				1,760				721				2,555	1,760	721	2,555
Provision (credit) for loan losses													275	1,065	(1,584)
Charge-offs													(133)	(26)	(250)
Recoveries													21
Balance	1,923				1,760				721				1,923	1,760	721
Allowance for loans individually evaluated for impairment																		15
Allowance for loans collectively evaluated for impairment																1,923	1,760	706
Allowance for loans acquired with deteriorated credit quality	1,923			1,760	1,760			721	721			2,555	1,760	1,760	721	1,923	1,760	721
Construction and Development Excluding Undeveloped Land Portfolio Segment [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Loans																	322	614
Balance
Balance
Allowance for loans acquired with deteriorated credit quality
Undevelopment Land Portfolio Segment [Member]
Loans																21,496	21,185	21,268
Loans individually evaluated for impairment																474
Loans collectively evaluated for impairment																21,022	21,185	21,268
Balance				814				1,545				5,376	814	1,545	5,376
Provision (credit) for loan losses													(130)	(2,131)	(2,244)
Charge-offs															(1,753)
Recoveries														1,400	166
Balance	684				814				1,545				684	814	1,545
Allowance for loans individually evaluated for impairment																1
Allowance for loans collectively evaluated for impairment																683	814	1,545
Allowance for loans acquired with deteriorated credit quality	684			814	814			1,545	1,545			5,376	814	814	1,545	684	814	1,545
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																1,319,520	1,197,411	1,150,399
Loans individually evaluated for impairment																2,516	4,050	3,720
Loans collectively evaluated for impairment																1,316,400	1,192,864	1,146,212
Balance				10,875				10,541				12,604	10,875	10,541	12,604
Provision (credit) for loan losses													(68)	872	(1,190)
Charge-offs													(576)	(693)	(993)
Recoveries													342	155	120
Balance	10,573				10,875				10,541				10,573	10,875	10,541
Allowance for loans individually evaluated for impairment																	208	256
Allowance for loans collectively evaluated for impairment																10,573	10,667	10,285
Allowance for loans acquired with deteriorated credit quality	10,573			10,875	10,875			10,541	10,541			12,604	10,875	10,875	10,541	10,573	10,875	10,541
Real Estate Mortgage Portfolio Segment [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Loans																604	497	467
Balance
Balance
Allowance for loans acquired with deteriorated credit quality
Consumer Portfolio Segment [Member]
Loans																35,170	35,531	29,396
Loans individually evaluated for impairment																59	68	76
Loans collectively evaluated for impairment																35,111	35,463	29,311
Balance				347				294				343	347	294	343
Provision (credit) for loan losses													148	151	25
Charge-offs													(568)	(597)	(587)
Recoveries													417	499	513
Balance	344				347				294				344	347	294
Allowance for loans individually evaluated for impairment																59	68	76
Allowance for loans collectively evaluated for impairment																285	279	218
Allowance for loans acquired with deteriorated credit quality	344			347	347			294	294			$ 343	347	347	294	344	347	294
Consumer Portfolio Segment [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Loans																		9
Balance
Balance
Allowance for loans acquired with deteriorated credit quality