Note 4 - Fair Value Measurements and Derivative Financial Instruments - Summary of Gains and Losses Before Income Taxes on Interest Rate Swap Cash Flow Hedges (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
(Loss) gain recognized in accumulated other comprehensive loss	$ (598)	$ 47	$ (3,476)	$ 34
(Loss) gain reclassified from accumulated other comprehensive loss to income	$ (391)	$ 224	$ (391)	$ 451

Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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