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

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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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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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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Amount of expense related to estimated loss from loan and lease transactions.

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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		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016	Sep. 30, 2017	Dec. 31, 2016
Loans						$ 2,335,120	$ 2,305,375
Loans collectively evaluated for impairment						2,328,828	2,298,482
Loans individually evaluated for impairment						5,807	6,269
Balance			$ 24,007	$ 22,441	$ 22,441
Provision for loan losses	$ 150	$ 1,250	1,650	2,500	3,000
Charge-offs			(1,233)		(2,493)
Recoveries			524		1,059
Balance	24,948		24,948		24,007
Allowance for loans collectively evaluated for impairment						24,226	22,740
Allowance for loans individually evaluated for impairment						722	1,267
Allowance for loans acquired with deteriorated credit quality	24,948		24,948	22,441	24,007	24,948	24,007
Receivables Acquired with Deteriorated Credit Quality [Member]
Loans						485	624
Balance
Balance
Allowance for loans acquired with deteriorated credit quality
Commercial and Industrial Portfolio Segment [Member]
Loans						750,728	736,841
Loans collectively evaluated for impairment						748,591	734,139
Loans individually evaluated for impairment						2,137	2,682
Balance			10,483	8,645	8,645
Provision for loan losses			1,518		2,775
Charge-offs			(770)		(1,216)
Recoveries			128		279
Balance	11,359		11,359		10,483
Allowance for loans collectively evaluated for impairment						10,705	9,276
Allowance for loans individually evaluated for impairment						654	1,207
Allowance for loans acquired with deteriorated credit quality	11,359		10,483	8,645	10,483	11,359	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						174,310	192,348
Loans collectively evaluated for impairment						173,573	191,810
Loans individually evaluated for impairment						737	538
Balance			1,923	1,760	1,760
Provision for loan losses			9		275
Charge-offs					(133)
Recoveries					21
Balance	1,932		1,932		1,923
Allowance for loans collectively evaluated for impairment						1,932	1,923
Allowance for loans individually evaluated for impairment
Allowance for loans acquired with deteriorated credit quality	1,932		1,923	1,760	1,923	1,932	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						20,989	21,496
Loans collectively evaluated for impairment						20,515	21,022
Loans individually evaluated for impairment						474	474
Balance			684	814	814
Provision for loan losses			(85)		(130)
Charge-offs
Recoveries
Balance	599		599		684
Allowance for loans collectively evaluated for impairment						599	683
Allowance for loans individually evaluated for impairment							1
Allowance for loans acquired with deteriorated credit quality	599		684	814	684	599	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						1,351,662	1,319,520
Loans collectively evaluated for impairment						1,348,774	1,316,400
Loans individually evaluated for impairment						2,403	2,516
Balance			10,573	10,875	10,875
Provision for loan losses			54		(68)
Charge-offs			(45)		(576)
Recoveries			98		342
Balance	10,680		10,680		10,573
Allowance for loans collectively evaluated for impairment						10,668	10,573
Allowance for loans individually evaluated for impairment						12
Allowance for loans acquired with deteriorated credit quality	10,680		10,573	10,875	10,573	10,680	10,573
Real Estate Mortgage Portfolio Segment [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Loans						485	604
Balance
Balance
Allowance for loans acquired with deteriorated credit quality
Consumer Portfolio Segment [Member]
Loans						37,431	35,170
Loans collectively evaluated for impairment						37,375	35,111
Loans individually evaluated for impairment						56	59
Balance			344	347	347
Provision for loan losses			154		148
Charge-offs			(418)		(568)
Recoveries			298		417
Balance	378		378		344
Allowance for loans collectively evaluated for impairment						322	285
Allowance for loans individually evaluated for impairment						56	59
Allowance for loans acquired with deteriorated credit quality	378		344	$ 347	344	378	344
Consumer Portfolio Segment [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Loans
Balance
Balance
Allowance for loans acquired with deteriorated credit quality