Note 27 - Revenue From Contracts With Customers (Details Textual) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue from Contract with Customer, Including Assessed Tax	$ 23,810	$ 23,994	$ 23,765
Contract with Customer, Asset, Net, Total	0
Contract with Customer, Liability, Total	0
Contract with Customer, Liability, Revenue Recognized	0
Safety Box Deposit Fees [Member] \| Other Income [Member]
Revenue from Contract with Customer, Including Assessed Tax	177	165	168
Fiduciary and Trust [Member]
Revenue from Contract with Customer, Including Assessed Tax	21,536	20,505	$ 19,155
Accrued Fees and Other Revenue Receivable	$ 1,900	$ 2,200

For an unclassified balance sheet, the amount of fees and other revenue, excluding investment income receivable, earned but not yet received, which were recognized in conformity with revenue recognition criteria based on estimates or specific contractual terms.

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-SubTopic 10
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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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