Note 11 - Commitments and Contingencies (Details Textual) $ in Millions	Mar. 31, 2020 USD ($)
Pledged Assets, Other, Not Separately Reported on Statement of Financial Position, Total	$ 6.6
Credit Protection Program [Member]
Loss Contingency, Estimate of Possible Loss	20.2
Loss Contingency Accrual, Ending Balance	1.4
Unfunded Individual Credit Commitment [Member]
Other Commitment, Total	1,200.0
Unfunded Outstanding Floor-Plan Financing Commitment [Member]
Other Commitment, Total	$ 9.1

Amount of loss contingency liability.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-SubTopic 20
-Section 50
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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

No definition available.

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- Definition

The carrying amount, as of the date of the latest financial statement presented, of all assets that are pledged as collateral for the payment of the related debt obligation primarily arising from secured borrowings, repurchase agreements or other current or potential obligations, where the secured party does not have the right by contract or custom to sell or re-pledge the collateral and therefore are not reclassified and separately reported in the statement of financial position.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
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-Section 50
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