Annual report pursuant to Section 13 and 15(d)

Impairments and (Gain) Loss on Assets Held for Sale - Summary of Assets Held for Sale (Details)

v3.21.1
Impairments and (Gain) Loss on Assets Held for Sale - Summary of Assets Held for Sale (Details) - Disposal Group, Held-for-sale, Not Discontinued Operations - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Long Lived Assets Held-for-sale [Line Items]      
Machinery and equipment $ 16,399 $ 17,618  
Accumulated depreciation (8,185) (8,612)  
Total assets held for sale 8,214 9,006 $ 18,000
Shipyard      
Long Lived Assets Held-for-sale [Line Items]      
Machinery and equipment 3,619    
Accumulated depreciation (1,605)    
Total assets held for sale 2,014    
F&S      
Long Lived Assets Held-for-sale [Line Items]      
Machinery and equipment 12,780 17,618  
Accumulated depreciation (6,580) (8,612)  
Total assets held for sale $ 6,200 $ 9,006