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Note 8 - Long-term Debt (Details) (USD $) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013
Note 8 - Long-term Debt (Details) [Line Items] |  |
Long-term Debt | $ 578,254,000 us-gaap_LongTermDebt | $ 482,781,000 us-gaap_LongTermDebt
Debt Instrument, Covenant, Leverage Ratio Maximum | 2.50 rusha_DebtInstrumentCovenantLeverageRatioMaximum |
Leverage Ratio | 2.52 rusha_LeverageRatio |
Variable Interest Rate Notes [Member] | Minimum [Member] |  |
Note 8 - Long-term Debt (Details) [Line Items] |  |
Debt Instrument, Periodic Payment | 1,910 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = rusha_VariableInterestRateNotesMember / us-gaap_RangeAxis = us-gaap_MinimumMember |
Variable Interest Rate Notes [Member] | Maximum [Member] |  |
Note 8 - Long-term Debt (Details) [Line Items] |  |
Debt Instrument, Periodic Payment | 80,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = rusha_VariableInterestRateNotesMember / us-gaap_RangeAxis = us-gaap_MaximumMember |
Fixed Interest Rate Notes [Member] | Minimum [Member] |  |
Note 8 - Long-term Debt (Details) [Line Items] |  |
Debt Instrument, Periodic Payment | 98 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = rusha_FixedInterestRateNotesMember / us-gaap_RangeAxis = us-gaap_MinimumMember |
Fixed Interest Rate Notes [Member] | Maximum [Member] |  |
Note 8 - Long-term Debt (Details) [Line Items] |  |
Debt Instrument, Periodic Payment | 59,437 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = rusha_FixedInterestRateNotesMember / us-gaap_RangeAxis = us-gaap_MaximumMember |
GE Capital Credit Agreement [Member] |  |
Note 8 - Long-term Debt (Details) [Line Items] |  |
Long-term Debt | 677,800,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rusha_GECapitalCreditAgreementMember |
Wells Fargo Equipment Finance, Inc. Loan Agreement [Member] |  |
Note 8 - Long-term Debt (Details) [Line Items] |  |
Long-term Debt | $ 82,700,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rusha_WellsFargoEquipmentFinanceIncLoanAgreementMember |
Minimum [Member] |  |
Note 8 - Long-term Debt (Details) [Line Items] |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 1.60%us-gaap_LongTermDebtPercentageBearingVariableInterestRate / us-gaap_RangeAxis = us-gaap_MinimumMember |
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate | 2.42%us-gaap_LongTermDebtPercentageBearingFixedInterestRate / us-gaap_RangeAxis = us-gaap_MinimumMember |
Maximum [Member] |  |
Note 8 - Long-term Debt (Details) [Line Items] |  |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate | 3.00%us-gaap_LongTermDebtPercentageBearingVariableInterestRate / us-gaap_RangeAxis = us-gaap_MaximumMember |
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate | 8.02%us-gaap_LongTermDebtPercentageBearingFixedInterestRate / us-gaap_RangeAxis = us-gaap_MaximumMember |

X
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- Definition Amount of the required periodic payments including both interest and principal payments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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