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Property and Equipment
12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
Property and Equipment PROPERTY AND EQUIPMENT
Property and equipment consisted of the following as of the dates presented (in thousands): 
As of December 31,
20212020
Land$5,344 $5,344 
Building35,878 24,091 
Computers9,731 9,186 
Furniture3,170 2,012 
Automobiles and other vehicles11,427 11,544 
Software6,775 7,166 
Total72,325 59,343 
Less: Accumulated depreciation and amortization(22,808)(20,043)
Net of accumulated depreciation and amortization49,517 39,300 
Construction in progress4,165 14,272 
Property and equipment, net$53,682 $53,572 
Depreciation and amortization expense was $6.6 million, $4.7 million and $4.5 million for the years ended December 31, 2021, 2020 and 2019, respectively.