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Property and Equipment
 3 Months Ended
Mar. 31, 2021
Property, Plant and Equipment [Abstract]  
Property and Equipment Property and Equipment
Property and equipment, net, as of March 31, 2021 and December 31, 2020 consist of the following:
March 31,
2021		December 31,
2020
Land$3,828 $3,828 
Building and improvements24,206 24,197 
Leasehold improvements481 482 
Machinery and equipment15,841 15,536 
Revenue-generating assets54,392 56,336 
Office and computer equipment14,147 13,855 
Motor vehicles31 31 
112,926 114,265 
Less accumulated depreciation(55,815)(57,992)
$57,111 $56,273 

Depreciation expense was $3,074 and $2,402 for the three months ended March 31, 2021 and 2020, respectively.

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