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, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]    
Capitalized engineering costs $ 27,705 $ 6,353
Capitalized start-up costs 17,747 19,290
Compensation and benefits 3,478 3,862
Federal 60,469 37,822
State 9,700 4,979
Foreign 4,087 2,392
Other, net 6,247 8,328
Deferred tax assets 129,433 83,026
Less valuation allowance (121,980) (83,026)
Deferred tax assets, net of valuation allowance 7,453 0
Deferred tax liabilities, property and equipment (7,453) 0
Net deferred tax assets $ 0 $ 0