Leases (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) lease	Dec. 31, 2020 USD ($)
Lessee, Lease, Description [Line Items]
Lease, Remaining Lease Term	48 years
ROU Asset, Modification, Operating	$ 26,300
Current Lease Liability, Modification, Operating	400
Long-Term Lease Liability, Modification, Operating	25,900
Subsidiaries [Member]
Lessee, Lease, Description [Line Items]
Right-of-Use, Modification, Operating	$ 26,287	$ 0
Property Subject to or Available for Finance Lease, Number of Units | lease	2
Subsidiaries [Member] | Kent Service Center
Lessee, Lease, Description [Line Items]
Finance Lease ROU Asset, Addition	$ 45,100
Current Lease Liability, Addition, Finance	1,000
Long-Term Lease Liability, Addition, Finance	$ 44,100
Lessee, Finance Lease, Term of Contract	20 years
Subsidiaries [Member] | Puyallup Service Center
Lessee, Lease, Description [Line Items]
Finance Lease ROU Asset, Addition	$ 61,300
Current Lease Liability, Addition, Finance	400
Long-Term Lease Liability, Addition, Finance	$ 59,900
Lessee, Finance Lease, Term of Contract	20 years