Leases - Narrative (Details) $ in Thousands		12 Months Ended
	Mar. 31, 2024 USD ($) ft²	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Lessee, Lease, Description [Line Items]
Operating lease not yet commenced		$ 4,200
Term of operating lease not yet commenced		3 years
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration]		Operating revenue	Operating revenue	Operating revenue
Revenue recognized from operating leases		$ 41,400	$ 45,300	$ 47,400
Lease receivables		$ 11,300	$ 9,300
Minimum
Lessee, Lease, Description [Line Items]
Renewal term		1 year
Maximum
Lessee, Lease, Description [Line Items]
Renewal term		5 years
Bismarck, ND headquarters
Lessee, Lease, Description [Line Items]
Operating lease term	60 months
Area of real estate property (in square feet) | ft²	16,188
Average annual rent payments	$ 303
Average annual common area maintenance charges	$ 102
Vehicles | Maximum
Lessee, Lease, Description [Line Items]
Operating lease term		5 years
Equipment | Maximum
Lessee, Lease, Description [Line Items]
Operating lease term		5 years
Building | Maximum
Lessee, Lease, Description [Line Items]
Operating lease term		35 years