SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2021

Accounting Policies [Abstract]

Schedule of Cash

The following table provides a reconciliation of cash and restricted cash to amounts shown in the statements of cash flows (in thousands):

	December 31,
	2021		2020		2019
Cash	$	6,262,905	$	614,412	$	351,684
Restricted cash included in other current assets	10,740		11,278		19,767
Restricted cash included in other noncurrent assets	24,375		14,728		8,200
Total cash and restricted cash	$	6,298,020	$	640,418	$	379,651

Schedule of Restricted Cash

The following table provides a reconciliation of cash and restricted cash to amounts shown in the statements of cash flows (in thousands):

	December 31,
	2021		2020		2019
Cash	$	6,262,905	$	614,412	$	351,684
Restricted cash included in other current assets	10,740		11,278		19,767
Restricted cash included in other noncurrent assets	24,375		14,728		8,200
Total cash and restricted cash	$	6,298,020	$	640,418	$	379,651

Schedule of Property, Plant and Equipment

The Company generally uses the following estimated useful lives for each asset category:

Asset Category	Life (years)
Machinery, Tooling & Vehicles	3 - 7
Computer equipment and software	3
Furniture and fixtures	5
Finance leases	3
Building and Improvements	40
Leasehold improvements	Shorter of the lease term or the estimated useful lives of the assets

Property, plant, and equipment as of December 31, 2021 and 2020 were as follows (in thousands):

	December 31, 2021		December 31, 2020
Land and land improvements	$	1,050	$	1,050
Building and improvements	195,952		—
Machinery, Tooling and Vehicles	601,791		28,830
Computer equipment and software	27,968		15,716
Leasehold improvements	135,533		47,187
Furniture and fixtures	15,352		4,503
Capital leases	—		3,908
Finance leases	13,601		—
Construction in progress	276,919		636,851
Total property, plant, and equipment	1,268,166		738,045
Less accumulated depreciation and amortization	(86,013)		(24,771)
Property, plant, and equipment — net	$	1,182,153	$	713,274

Construction in progress consisted of the following (in thousands):

	December 31, 2021		December 31, 2020
Machinery and Tooling	$	132,943	$	414,529
Construction of Arizona plant	112,970		171,532
Leasehold improvements	31,006		50,790
Total construction in progress	$	276,919	$	636,851

Schedule of Cumulative Effect of Adoption of Accounting Standards Update

The cumulative effect of the changes made to the Company’s consolidated balance sheet as of January 1, 2021 for the adoption of the new lease standard was as follows (in thousands):

	Balances at December 31, 2020		Adjustments from Adoption of New Lease Standard		Balances at January 1, 2021
Assets
Prepaid expenses	$	21,840	$	(180)	$	21,660
Property, plant and equipment, net	713,274		—		713,274
Operating lease right-of-use assets	—		90,932		90,932
Liabilities
Other current liabilities	151,753		7,754		159,507
Other long-term liabilities	39,139		83,191		122,330