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Property and Equipment
 6 Months Ended
Jun. 30, 2021
Property, Plant and Equipment [Abstract]  
Property and Equipment Property and Equipment
Property and equipment, net, as of June 30, 2021 and December 31, 2020 consist of the following:
June 30,
2021		December 31,
2020
Land$3,828 $3,828 
Building and improvements24,231 24,197 
Leasehold improvements479 482 
Machinery and equipment16,215 15,536 
Revenue-generating assets58,320 56,336 
Office and computer equipment14,579 13,855 
Motor vehicles31 31 
117,683 114,265 
Less accumulated depreciation(58,581)(57,992)
$59,102 $56,273 

Depreciation expense was $3,333 and $2,511 for the three months ended June 30, 2021 and 2020, respectively, and $6,407 and $4,913 for the six months ended June 30, 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.