XML 22 R10.htm IDEA: XBRL DOCUMENT v3.23.1
PROPERTY AND EQUIPMENT
 3 Months Ended
Mar. 31, 2023
Property, Plant and Equipment [Abstract]  
PROPERTY AND EQUIPMENT PROPERTY AND EQUIPMENT
Property and equipment consist of the following (in thousands):
March 31,
2023		December 31, 2022
Aircraft $563,934 $566,338 
Software development costs73,098 65,303 
Leasehold improvements 15,769 11,930 
Computer equipment 3,719 3,014 
Buildings and improvements1,424 1,424 
Furniture and fixtures3,110 3,208 
Tooling 3,998 3,835 
Vehicles1,834 1,538 
666,886 656,590 
Less: Accumulated depreciation and amortization (268,176)(262,031)
Total $398,710 $394,559 
Depreciation and amortization expense of property and equipment was $9.0 million for the three months ended March 31, 2023 and $9.5 million for the three months ended March 31, 2022.
Amortization expense related to software development costs, included as part of depreciation and amortization expense of property and equipment, was $2.8 million for the three months ended March 31, 2023, and $2.3 million for the three months ended March 31, 2022.