Property, Plant and Equipment, Net

12 Months Ended

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment, Net

Property, Plant and Equipment, Net

Property, plant and equipment, net consists of the following as of December 31, 2021 and December 31, 2020:

	As of
	December 31, 2021		December 31, 2020
	(In thousands)
Leasehold improvements	$	23,501	$	20,769
Machinery and equipment	59,358		50,285
Aircraft	8,000		8,000
IT software and equipment	22,397		20,190
Construction in progress	23,167		11,898
	136,423		111,142
Less: accumulated depreciation and amortization	(74,998)		(62,039)
Property, plant and equipment, net	$	61,425	$	49,103

Depreciation expense recorded in the consolidated statements of operations and comprehensive loss during the years ended December 31, 2021 and 2020 consisted of the following:

	Years Ended December 31,
	2021		2020
	(In thousands)
Cost of revenue	$	556	$	—
Research and development, net	1,348		9,333
Selling, general and administrative	10,385		2,855
Total depreciation expense	$	12,289	$	12,188

The Company’s capitalized software totaled $0.8 million and $0.9 million, net of accumulated amortization of $7.4 million and $6.7 million, as of December 31, 2021 and December 31, 2020, respectively. No amortization expense is recorded until the software is ready for its intended use. For the years ended December 31, 2021 and 2020, amortization expense related to capitalized software was $0.7 million and $1.0 million, respectively.