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Note 15 - Derivatives - Derivative Instruments (Details) - Interest Rate Swap [Member] - Cash Flow Hedging [Member] - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Other Noncurrent Liabilities [Member] |  |  |
Derivatives, notional amount |  | $ 28,821 |
Derivatives, fair value | [1] | $ (603) |
Other Assets [Member] |  |  |
Derivatives, notional amount |  |  | $ 34,090
Derivatives, fair value | [1] |  | $ (170)
[1] | See Note 16 for the fair value measurements related to these financial instruments.

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- Definition Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=117331979&loc=d3e41228-113958 + Details
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