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Note 18 - Financial Instruments (Details Textual) - USD ($) $ in Millions | Dec. 31, 2018 | Apr. 30, 2017
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Contingent Consideration Liability [Member] |  |
Fair Value Inputs, Weighted Average Discount Rate Increase | 2.00% |
Reduction in Fair Value of Contingent Consideration Liability | $ 4.8 |
Minimum [Member] | Measurement Input, Discount Rate [Member] |  |
Business Combination, Contingent Consideration, Liability, Measurement Input | 0.03 |
Measurement Inputs, Contingent Consideration, Data Point Concentration | 3.80% |
Maximum [Member] | Measurement Input, Discount Rate [Member] |  |
Business Combination, Contingent Consideration, Liability, Measurement Input | 0.091 |
Measurement Inputs, Contingent Consideration, Data Point Concentration | 8.70% |
Weighted Average [Member] | Measurement Input, Discount Rate [Member] |  |
Business Combination, Contingent Consideration, Liability, Measurement Input | 0.061 |
Interest Rate Swap [Member] |  |
Derivative Asset, Notional Amount | $ 100.0 | $ 100.0
Derivative, Fixed Interest Rate | 2.7205% | 1.897%

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- Definition Increase in the weighted average interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References No definition available. + Details
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- Definition A data point concentration of the interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References No definition available. + Details
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- Definition Amount of contingent consideration liability reduced by increase in the weighted average discount rate. + References No definition available. + Details
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- Definition Value of input used to measure contingent consideration liability from business combination. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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- Definition Nominal or face amount used to calculate payments on the derivative asset. + References Reference 1: 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=109980867&loc=SL5579245-113959 Reference 2: 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=109980867&loc=SL5580258-113959 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959 + Details
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- Definition Fixed interest rate related to the interest rate derivative. + References No definition available. + Details
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- Details
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