Annual report pursuant to Section 13 and 15(d)

INCOME TAXES. (Details 2)

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INCOME TAXES. (Details 2) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Deferred tax assets:    
Net operating loss carryforwards $ 61,775 $ 48,082
R&D, Energy and AMT credits 3,864 4,247
Disallowed interest 8,242 3,769
Railcar contracts 379 650
Stock-based compensation 551 782
Allowance for doubtful accounts and other assets 578 643
Derivatives 1,214
Pension liability 2,979 2,941
Property and equipment 3,325
Other 3,458 2,134
Total deferred tax assets 85,151 64,462
Deferred tax liabilities:    
Property and equipment (23,013)
Intangibles (749) (749)
Derivatives (153)
Other (437) (363)
Total deferred tax liabilities (1,339) (24,125)
Valuation allowance (84,065) (40,588)
Net deferred tax liabilities, included in other liabilities $ (253) $ (251)