9.    Finance Lease ROU Assets

As discussed above, the Company assumed three equipment leases as part of the RubrYc asset acquisition. In addition, the Company leased a mobile office trailer which is classified as part of assets held for sale. The lease for the mobile office trailer was terminated in December 2022.

See Note 15 – Finance Lease Obligations for more details of the terms of the leases.

​

The following table summarizes by category the gross carrying value and accumulated amortization of finance lease ROU (in thousands):

​

Amortization expense of finance lease ROU assets was approximately $204,000 and $0 for the years ended June 30, 2023 and 2022, respectively.