Quarterly report pursuant to Section 13 or 15(d)

PROPERTY AND EQUIPMENT

v3.21.2
PROPERTY AND EQUIPMENT
 9 Months Ended
Sep. 30, 2021
Property, Plant and Equipment [Abstract]  
PROPERTY AND EQUIPMENT PROPERTY AND EQUIPMENT
Property and equipment consist of the following (in thousands):
September 30,
2021		 December 31, 2020
Aircraft $ 475,769  $ 473,509 
Software development costs 32,129  22,414 
Leasehold improvements 11,703  9,560 
Computer equipment 2,147  1,846 
Buildings and improvements 1,424  1,424 
Furniture and fixtures 1,959  1,321 
Tooling 2,890  1,296 
Vehicles 800  597 
528,821  511,967 
Less: Accumulated depreciation and amortization (214,835) (188,877)
Total $ 313,986  $ 323,090 
Depreciation and amortization expense of property and equipment was $8.4 million and $26.0 million for the three and nine months ended September 30, 2021, respectively, and $10.0 million and $31.0 million for the three and nine months ended September 30, 2020, respectively.
Capitalized costs related to the internal development of software was $3.9 million and $9.6 million for the three and nine months ended September 30, 2021, respectively, and $2.1 million and $5.1 million for the three and nine months ended September 30, 2020, respectively.
Amortization expense related to software development costs, included as part of depreciation and amortization expense of property and equipment, was $1.8 million and $4.8 million for the three and nine months ended September 30, 2021, respectively, and $1.2 million and $3.2 million for the three and nine months ended September 30, 2020, respectively.