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Property and Equipment (Tables)
6 Months Ended
Jun. 30, 2019
Property, Plant and Equipment [Abstract]  
Property and Equipment
Property and equipment, net, as of June 30, 2019 and December 31, 2018 consist of the following:

 
June 30,
2019
 
December 31,
2018
Land
$
3,828

 
$
3,828

Building and improvements
24,096

 
24,060

Leasehold improvements
493

 
478

Machinery and equipment
17,520

 
17,239

Revenue-generating assets
43,111

 
38,066

Office and computer equipment
13,166

 
12,681

Motor vehicles
31

 
31

 
102,245

 
96,383

Less accumulated depreciation
(49,744
)
 
(45,750
)
 
$
52,501

 
$
50,633