Note 4 – Intangible Assets 

The components of our intangible assets are as follows (in thousands):

The useful lives of our intangible assets are estimated to be five years at inception. For the three months ended March 31, 2022 and 2021, amortization expense was approximately $54,000. 

The following table represents the amortization expense for the twelve months ending March 31 (in thousands):