Quarterly report pursuant to Section 13 or 15(d)

Assets Held for Sale - Additional Information (Details)

v3.20.2
Assets Held for Sale - Additional Information (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
USD ($)
Sep. 30, 2019
USD ($)
Sep. 30, 2020
USD ($)
crane
Sep. 30, 2019
USD ($)
Long Lived Assets Held-for-sale [Line Items]        
Gain (loss) on sale of assets     $ 5 $ 565
Held for sale        
Long Lived Assets Held-for-sale [Line Items]        
Number of cranes | crane     3  
Proceeds from the sale of assets held for sale $ 600   $ 1,700 400
Gain (loss) on sale of assets $ (100)   $ (100) 400
Impairment of long-lived assets to be disposed of   $ 300   $ 600