XML 26 R16.htm IDEA: XBRL DOCUMENT v3.21.1
Other Assets
 3 Months Ended
Mar. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Other Assets Other Assets
Other assets consisted of the following (in thousands):
As of
March 31, 2021December 31, 2020
Demonstration assets, net$2,472 $2,598 
Deferred tax assets, net66 69 
Other2,500 2,500 
$5,038 $5,167 

Demonstration (demo) assets are equipment that is used for demonstration and other purposes with existing and prospective customers. Demo assets are recorded at cost and amortized over an estimated useful life of approximately two years. Amortization expense was as follows for the periods presented (in thousands):
Three Months Ended March 31,
 20212020
Amortization expense$541 $504