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Note 5 - Derivative Instruments and Hedging Activities - Movement in AOCI Balance (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
AOCI balance, Gains and losses on cash flow hedges	$ 780		$ 625
AOCI balance, Tax impact	(184)		(152)
AOCI balance	596		473
Other comprehensive income (loss) before reclassifications, Gains and losses on cash flow hedges	946		784
Other comprehensive income (loss) before reclassifications, Tax impact	(217)		(175)
Other comprehensive income (loss) before reclassifications	729	$ (175)	609	$ 614
Amount reclassified from AOCI, Gains and losses on cash flow hedges	59		376
Amount reclassified from AOCI, Tax impact	(13)		(87)
Amount reclassified from AOCI	46	$ 26	289	$ 167
Other comprehensive income (loss), Gains and losses on cash flow hedges	1,005		1,160
Other comprehensive income (loss), Tax impact	(230)		(262)
Other comprehensive income (loss)	775		898
AOCI balance, Gains and losses on cash flow hedges	1,785		1,785
AOCI balance, Tax impact	(414)		(414)
AOCI balance	$ 1,371		$ 1,371

X

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, tax expense (benefit). Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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