The amount of realized gain (loss) from acquisition of equity method investments.

No definition available.

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- Definition

Fair value portion of the call option.

+ References

No definition available.

+ Details

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- Definition

The remaining percentage of ownership not yet acquired of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

No definition available.

+ Details

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=109237563&loc=d3e33749-111570

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(10))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 25
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8813-108599

+ Details

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Period Type:	instant

- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248

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- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI https://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248

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- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585

+ Details

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- Details

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- Details

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- Details

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- Details

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Note 2 - Other Assets (Details Textual) $ in Millions, $ in Millions	Jan. 03, 2022 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Apr. 25, 2019 CAD ($)	Feb. 25, 2019
Financial Guarantee [Member]
Guarantor Obligations, Maximum Exposure, Undiscounted				$ 250
Other Noncurrent Liabilities [Member] \| Financial Guarantee [Member]
Guarantor Obligations, Current Carrying Value		$ 5.3	$ 5.2
Rush Truck Centres of Canada Limited [Member]
Equity Method Investment, Ownership Percentage					50.00%
Rush Truck Centres of Canada Limited [Member] \| Other Noncurrent Liabilities [Member]
Equity Method Investments		38.7
Rush Truck Centres of Canada Limited [Member] \| Call Option [Member]
Equity Method Investment, Remaining Ownership Percentage Not Yet Acquired					50.00%
Rush Truck Centres of Canada Limited [Member] \| Call Option [Member] \| Other Assets [Member]
Call Option, Fair Value Disclosure		3.6
Momentum Fuel Technologies [Member]
Equity Method Investment, Ownership Percentage	50.00%
Equity Method Investments		$ 14.9
Payments to Acquire Equity Method Investments	$ 27.5
Momentum Fuel Technologies [Member] \| Other Income [Member]
Acquisition of Equity Method Investments, Realized Gain (Loss)	$ 12.5