Annual report pursuant to Section 13 and 15(d)

Leases - Narrative (Details)

v3.20.4
Leases - Narrative (Details)
Dec. 31, 2020
Lessee, Lease, Description [Line Items]  
Weighted average remaining lease term 3 years 10 days
Weighted-average discount rate - operating lease 4.22%
Minimum  
Lessee, Lease, Description [Line Items]  
Lease term 1 year
Maximum  
Lessee, Lease, Description [Line Items]  
Lease term 5 years
Drilling Rig | Minimum  
Lessee, Lease, Description [Line Items]  
Lease term 1 year
Drilling Rig | Maximum  
Lessee, Lease, Description [Line Items]  
Lease term 2 years