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Note 10 - Accumulated Other Comprehensive Loss (Details Textual) - USD ($) $ in Millions	Jan. 10, 2019	Sep. 30, 2020	Dec. 31, 2019
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax		$ 6.0	$ 3.0
Accumulated Other Comprehensive Income (Loss), Tax		$ 1.5	$ 0.8
Interest Rate Swap [Member]
Debt Instrument, Term (Year)	5 years
Derivative, Notional Amount	$ 75.0
Derivative, Fixed Interest Rate	2.57%

X

- Definition

Amount, after tax, of accumulated gain (loss) on derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580

+ Details

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X

- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

X

- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959

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X

- Definition

Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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X

- Definition

Amount of tax attributable to accumulated other comprehensive income (loss).

+ References

No definition available.

+ Details

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X

- Details

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