Property, Plant and Equipment

9 Months Ended

12 Months Ended

Sep. 30, 2021

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

6. Property, Plant and Equipment

The balance of property, plant and equipment, net is as follows ($ in thousands):

	September 30, 2021			December 31, 2020
Property, plant, and equipment, gross
Leasehold improvements	$	667		$	575
Computer equipment		553			149
Machinery, vehicles, and other equipment		824			60
Furniture and fixtures		211			10
Construction in progress		58			—
Total property, plant, and equipment, gross		2,313			794
Accumulated depreciation		(488	)		(219	)
Total property, plant, and equipment, net	$	1,825		$	575

5.    Property, Plant and Equipment

The balance of property, plant and equipment, net is as follows:

	As of December 31,
	2020			2019
Property, plant, and equipment, gross
Leasehold improvements	$	575,399		$	493,723
Computer equipment		149,372			43,917
Machinery, vehicles, and other equipment		59,890			—
Furniture and fixtures		9,735			9,735
Total property, plant, and equipment, gross		794,396			547,375
Accumulated depreciation		(219,071	)		(79,767	)
Total property, plant, and equipment, net	$	575,325		$	467,608

Depreciation expense for property and equipment was $139.3 thousand and $46.1 thousand for the years ended December 31, 2020 and 2019, respectively.