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Note 6 - Fair Value of Long-lived Assets Measured on a Nonrecurring Basis (Details) - Long-lived Assets Held-for-sale [Member] - Fair Value, Measurements, Nonrecurring [Member] - Fair Value, Inputs, Level 3 [Member] $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($)
Long-lived assets held for sale	$ 19,302
Long-lived assets held for sale	$ 7,081

X

- Definition

Amount of gain (loss) recognized in the income statement for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

No definition available.

+ Details

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Namespace Prefix:	rusha_
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Balance Type:	credit
Period Type:	duration

X

- Definition

Fair value portion of assets classified as held for sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258

+ Details

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Period Type:	instant

X

- Details

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X

- Details

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X

- Details

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