Note 5 – Intangible Assets, Net

Intangible assets, net, consists of the following (in thousands):

The following table represents the total estimated amortization of intangible assets for the five succeeding years and thereafter as of June 30, 2021 (in thousands):

For the three months ended June 30, 2021 and 2020, amortization expense was approximately $47,000 and $10,000, respectively.