5. Leases

The Company has entered into operating leases primarily for commercial buildings. These leases have terms which range from 2 years to 11 years, some of which include options to extend the leases for up to 5 years. There are no economic penalties for the Company to extend the lease, and it is not reasonably assured that the Company will exercise the extension options. Operating lease right-of-use assets and liabilities commencing after January 1, 2019 are recognized at commencement date based on the present value of lease payments over the lease term. The operating leases do not contain material residual value guarantees or material restrictive covenants.

Rent expense, including short-term lease cost, was $1,105 and $757 for the three months ended June 30, 2021 and June 30, 2020, respectively, and $2,093 and $1,508 for the six months ended June 30, 2021 and June 30, 2020, respectively.

Information related to the Company's right-of-use assets and related operating lease liabilities were as follows: