Note 2 - Other Assets	3 Months Ended
Mar. 31, 2022
Notes to Financial Statements
Other Assets Disclosure [Text Block]	2 – Other Assets Equity Method Investments and Call Option On February 25, 2019, the Company acquired 50% of the equity interest in Rush Truck Centres of Canada Limited (“RTC Canada”), which acquired the operating assets of Tallman Group, the largest International Truck dealer in Canada. The Company was also granted a call option in the purchase agreement that provides the Company with the right to acquire the remaining 50% equity interest in RTC Canada until the close of business on February 25, 2024. The value of the Company’s call option was $3.6 million as of March 31, 2022, and is reported in Other Assets on the Consolidated Balance Sheet. On April 25, 2019, the Company entered into a Guaranty Agreement (“Guaranty”) with Bank of Montreal (“BMO”), pursuant to which the Company agreed to guaranty up to CAD250 million (the “Guaranty Cap”) of certain credit facilities entered into by and between Tallman Truck Centre Limited (“TTCL”) and BMO. The Company owned a 50% equity interest in TTCL, which was the sole owner of RTC Canada. Later in 2019, RTC Canada and TTCL were amalgamated into RTC Canada. Interest, fees and expenses incurred by BMO to enforce its rights with respect to the guaranteed obligations and its rights against the Company under the Guaranty are not subject to the Guaranty Cap. In exchange for the Guaranty, RTC Canada is receiving a reduced rate of interest on its credit facilities with BMO. The Guaranty was valued at $5.3 million as of March 31, 2022 and $5.2 million as of December 31, 2021, and is included in the investment in RTC Canada. As of March 31, 2022, the Company’s investment in RTC Canada is $38.7 million. The Company’s equity income in RTC Canada is included in Other income on the Consolidated Statements of Income. On January 3, 2022, a subsidiary of Cummins, Inc. acquired a 50% equity interest in Natural Gas Fuel Systems, LLC, which previously conducted business as Momentum Fuel Technologies, from the Company for $27.5 million. The $12.5 million gain realized on the transaction is included in Other income on the Consolidated Statements of Income and Comprehensive Income. The Company is accounting for the business as a joint venture and recognizes the investment using the equity method. As of March 31, 2022, the Company’s investment in Natural Gas Fuels Systems, LLC is $14.9 million. The Company’s equity income in Natural Gas Fuels Systems, LLC is included in Other income on the Consolidated Statements of Income.

Note 2 - Other Assets

3 Months Ended

Mar. 31, 2022

2 – Other Assets

Equity Method Investments and Call Option

On February 25, 2019, the Company acquired 50% of the equity interest in Rush Truck Centres of Canada Limited (“RTC Canada”), which acquired the operating assets of Tallman Group, the largest International Truck dealer in Canada. The Company was also granted a call option in the purchase agreement that provides the Company with the right to acquire the remaining 50% equity interest in RTC Canada until the close of business on February 25, 2024. The value of the Company’s call option was $3.6 million as of March 31, 2022, and is reported in Other Assets on the Consolidated Balance Sheet.

On April 25, 2019, the Company entered into a Guaranty Agreement (“Guaranty”) with Bank of Montreal (“BMO”), pursuant to which the Company agreed to guaranty up to CAD250 million (the “Guaranty Cap”) of certain credit facilities entered into by and between Tallman Truck Centre Limited (“TTCL”) and BMO. The Company owned a 50% equity interest in TTCL, which was the sole owner of RTC Canada. Later in 2019, RTC Canada and TTCL were amalgamated into RTC Canada. Interest, fees and expenses incurred by BMO to enforce its rights with respect to the guaranteed obligations and its rights against the Company under the Guaranty are not subject to the Guaranty Cap. In exchange for the Guaranty, RTC Canada is receiving a reduced rate of interest on its credit facilities with BMO. The Guaranty was valued at $5.3 million as of March 31, 2022 and $5.2 million as of December 31, 2021, and is included in the investment in RTC Canada. As of March 31, 2022, the Company’s investment in RTC Canada is $38.7 million. The Company’s equity income in RTC Canada is included in Other income on the Consolidated Statements of Income.

On January 3, 2022, a subsidiary of Cummins, Inc. acquired a 50% equity interest in Natural Gas Fuel Systems, LLC, which previously conducted business as Momentum Fuel Technologies, from the Company for $27.5 million. The $12.5 million gain realized on the transaction is included in Other income on the Consolidated Statements of Income and Comprehensive Income. The Company is accounting for the business as a joint venture and recognizes the investment using the equity method. As of March 31, 2022, the Company’s investment in Natural Gas Fuels Systems, LLC is $14.9 million. The Company’s equity income in Natural Gas Fuels Systems, LLC is included in Other income on the Consolidated Statements of Income.