Annual report pursuant to Section 13 and 15(d)

INCOME TAXES - Components of Deferred Tax Assets and Liabilities (Details)

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INCOME TAXES - Components of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Income Tax Disclosure [Abstract]    
Capitalized engineering costs $ 45,865 $ 27,705
Capitalized start-up costs 16,361 17,747
Compensation and benefits 4,475 3,478
Property, plant and equipment 10,569 0
Lease liability 5,977 0
Federal 68,515 60,469
State 11,449 9,700
Foreign 5,242 4,087
Other, net 3,329 6,247
Deferred tax assets 171,782 129,433
Less valuation allowance (171,782) (121,980)
Deferred tax assets, net of valuation allowance 0 7,453
Deferred tax liabilities, property and equipment 0 (7,453)
Net deferred tax assets $ 0 $ 0