XML 53 R43.htm IDEA: XBRL DOCUMENT v3.22.1
Property, Plant and Equipment - Additional Information (Detail)
£ in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2022
USD ($)
Mar. 31, 2021
USD ($)
Mar. 31, 2022
GBP (£)
Dec. 31, 2021
USD ($)
Property Plant And Equipment [Line Items]        
Finance lease assets gross value $ 4,391     $ 3,882
Finance lease, lease related accumulated amortization 1,348     $ 1,263
Depreciation expense 4,389 $ 4,494    
Depreciation on assets under finance leases 120 $ 118    
Union Electric Steel UK Limited [Member]        
Property Plant And Equipment [Line Items]        
Land and buildings held as collateral $ 2,787   £ 2,122