Note 6 - Commitments and Contingencies	9 Months Ended
Mar. 31, 2016
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	6. Commitments and Contingencies We are party to certain lawsuits in the ordinary course of business. We are not currently party to any proceedings which we believe will have a material adverse effect on our consolidated financial position or operations. A subsidiary has been named as the defendant in a class action proceeding. A summary judgment was granted in favor of the plaintiffs. We have appealed this judgment. We believe that we will be successful on appeal, but that it is also reasonably possible the judgment will be upheld. We estimate the possible range of financial exposure associated with this claim to be between $0 and approximately $5 million. We currently do not have a contingency reserved for this claim, but will continue to monitor the progress of this claim to determine if a reserve is necessary in the future. We have also been named as the defendant in a second class action proceeding. A judgment was granted in favor of the plaintiffs. We have appealed this judgment. We believe that we will be successful on appeal, but that it is also reasonably possible the judgment will be upheld. We estimate the possible range of financial exposure associated with this claim to be between $0 and approximately $2 million. We currently do not have a contingency reserved for this claim, but will continue to monitor the progress of this claim to determine if a reserve is necessary in the future. We have planned commitments to add $41 million of tractor operating leases over the next twelve months as of March 31, 2016. Generally, our purchase orders do not become firm commitment orders for which we are irrevocably obligated until shortly before purchase. We may also choose to time our purchases based on performance of existing equipment throughout the year. Our plans to purchase equipment are reevaluated on a quarter by quarter basis. As of March 31, 2016, the Company had outstanding purchase commitments of approximately $7.1 million for facilities and land. Factors such as costs and opportunities for future terminal expansions may change the amount of such expenditures. Standby letters of credit, not reflected in the accompanying condensed consolidated financial statements, aggregated approximately $3.8 million at March 31, 2016. In addition, at March 31, 2016, 500,000 treasury shares were held in a trust as collateral for self-insurance reserves.

Commitments and Contingencies

We are party to certain lawsuits in the ordinary course of business. We are not currently party to any proceedings which we believe will have a material adverse effect on our consolidated financial position or operations. A subsidiary has been named as the defendant in a class action proceeding. A summary judgment was granted in favor of the plaintiffs. We have appealed this judgment. We believe that we will be successful on appeal, but that it is also reasonably possible the judgment will be upheld. We estimate the possible range of financial exposure associated with this claim to be between $0 and approximately $5 million. We currently do not have a contingency reserved for this claim, but will continue to monitor the progress of this claim to determine if a reserve is necessary in the future.

We have also been named as the defendant in a second class action proceeding. A judgment was granted in favor of the plaintiffs. We have appealed this judgment. We believe that we will be successful on appeal, but that it is also reasonably possible the judgment will be upheld. We estimate the possible range of financial exposure associated with this claim to be between $0 and approximately $2 million. We currently do not have a contingency reserved for this claim, but will continue to monitor the progress of this claim to determine if a reserve is necessary in the future.

We have planned commitments to add $41 million of tractor operating leases over the next twelve months as of March 31, 2016. Generally, our purchase orders do not become firm commitment orders for which we are irrevocably obligated until shortly before purchase. We may also choose to time our purchases based on performance of existing equipment throughout the year. Our plans to purchase equipment are reevaluated on a quarter by quarter basis. As of March 31, 2016, the Company had outstanding purchase commitments of approximately $7.1 million for facilities and land. Factors such as costs and opportunities for future terminal expansions may change the amount of such expenditures.

Standby letters of credit, not reflected in the accompanying condensed consolidated financial statements, aggregated approximately $3.8 million at March 31, 2016. In addition, at March 31, 2016, 500,000 treasury shares were held in a trust as collateral for self-insurance reserves.