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Property and Equipment
3 Months Ended
Mar. 31, 2022
Property, Plant and Equipment [Abstract]  
Property and Equipment Property and Equipment
Property and equipment, net, as of March 31, 2022 and December 31, 2021 consist of the following:
March 31,
2022
December 31,
2021
Land$3,828 $3,828 
Building and improvements24,271 24,271 
Leasehold improvements471 472 
Machinery and equipment16,947 16,790 
Revenue-generating assets66,109 63,587 
Office and computer equipment15,976 15,395 
Motor vehicles31 31 
127,633 124,374 
Less accumulated depreciation(67,032)(64,260)
$60,601 $60,114 

Depreciation expense was $3,373 and $3,074 for the three months ended March 31, 2022 and 2021, respectively.

Certain revenue-generating hardware assets are utilized by the Company in the delivery of the Company's airtime services, media and other content.