Investments	3 Months Ended
Investments	Mar. 31, 2023
Equity Method Investments and Joint Ventures [Abstract]
Investments	Investments Equity Investments without Readily Determinable Fair Values Our strategic equity investments without readily determinable fair values include MLSI, a transportation management systems company, and Fleet Defender, Inc., a platform cybersecurity company for fleet owners. MLSI is developing a cloud-based transportation management system using MLSI's SaaS technology which we have agreed to license. These investments are being accounted for under ASC 321 using the measurement alternative and are recorded in other noncurrent assets on the consolidated condensed balance sheets. We record changes in the values of these investments based on events that occur that would indicate the values have changed, in loss (gain) on investments in equity securities on the consolidated statements of income. As of March 31, 2023 and December 31, 2022, the value of our investment in MLSI was $86.8 million and the value of our investment in Fleet Defender, Inc. was $250 thousand. There was no activity related to our equity investments without readily determinable fair values during the three months ended March 31, 2023 and 2022. As of March 31, 2023, cumulative upward adjustments on our equity securities without readily determinable fair values totaled $56.8 million. Equity Investments with Readily Determinable Fair Values We own strategic minority equity investments in autonomous technology companies, which are being accounted for under ASC 321 and are recorded in other noncurrent assets on the consolidated condensed balance sheets. We record changes in the value of these investments, based on the share prices reported by Nasdaq, in loss (gain) on investments in equity securities on the consolidated statements of income. As of March 31, 2023 and December 31, 2022, the value of these investments was $0.6 million and $0.7 million, respectively. We recognized an unrealized loss of $0.1 million and $9.8 million on these investments for the three months ended March 31, 2023 and 2022, respectively. For additional information regarding the fair value of these equity investments, see Note 6 – Fair Value. Equity Method Investment In January 2023, we committed to make a $20.0 million investment in Autotech Fund III pursuant to a limited partnership agreement. Autotech Fund III is managed by Autotech Ventures, a venture capital firm focused on ground transportation technology. Our interest, which represents an ownership percentage of less than 20%, is being accounted for under ASC 323, “Investments - Equity Method and Joint Ventures.” As a limited partner, we will make periodic capital contributions toward this total commitment amount. As of March 31, 2023, our cumulative investment in Autotech Fund III was $2.1 million, which we contributed during the three months ended March 31, 2023. As of March 31, 2023, the value of our investment in Autotech Fund III was $2.1 million and is recorded in other noncurrent assets on the consolidated condensed balance sheets. We will record earnings and losses attributed to the fund in loss (earnings) from equity method investment on the consolidated statements of income. No earnings or losses were recognized for the three months ended March 31, 2023. The carrying amount of Autotech Fund III as of March 31, 2023 approximates its fair value, as this is the most recent information available to us at this time.