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PROPERTY, SOFTWARE, AND EQUIPMENT, NET
 12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
PROPERTY, SOFTWARE, AND EQUIPMENT, NET
NOTE 9: PROPERTY, SOFTWARE, AND EQUIPMENT, NET
Property, software, and equipment are presented net of accumulated depreciation and amortization and summarized as follows:
Year ended December 31,
(in thousands) 20202021
Tenant improvements$18,945 $64,313 
Internally developed software16,992 31,142 
Computer equipment9,203 23,731 
Furniture and fixtures8,024 21,927 
Construction in progress9,756 44,343 
Total62,920 185,456 
Less: accumulated depreciation and amortization(17,086)(39,037)
Property, software, and equipment, net$45,834 $146,419 
Depreciation expense of property and equipment was $2.1 million, $5.7 million, and $15.3 million for the years ended December 31, 2019, 2020, and 2021.
Amortization expense of internally developed software was $3.3 million, $4.2 million, and $6.8 million for the years ended December 31, 2019, 2020, and 2021.