Leases (Tables)

12 Months Ended

Dec. 31, 2020

Leases [Abstract]

Lessee, Leases, Supplemental Cash Flow Information [Table Text Block]

Supplemental cash flow information related to leases was as follows:

	Year ended December 31, 2020
In thousands	NW Natural		Other (NW Holdings)		NW Holdings
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$	4,466	$	131	$	4,597
Finance cash flows from finance leases	$	835	$	—	$	835
Right of use assets obtained in exchange for lease obligations
Operating leases	$	78,539	$	51	$	78,590
Finance leases	$	1,386	$	—	$	1,386

	Year ended December 31, 2019
In thousands	NW Natural		Other (NW Holdings)		NW Holdings
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$	4,447	$	182	$	4,629
Finance cash flows from finance leases	$	120	$	—	$	120
Right of use assets obtained in exchange for lease obligations
Operating leases	$	7,205	$	372	$	7,577
Finance leases	$	312	$	—	$	312

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

Maturities of operating lease liabilities at December 31, 2020 were as follows:

In thousands	NW Natural		Other (NW Holdings)		NW Holdings
2021	$	6,760	$	52	$	6,812
2022	6,849		67		6,916
2023	6,986		—		6,986
2024	7,150		—		7,150
2025	7,185		—		7,185
Thereafter	123,784		—		123,784
Total lease payments	158,714		119		158,833
Less: imputed interest	77,101		6		77,107
Total lease obligations	81,613		113		81,726
Less: current obligations	1,054		51		1,105
Long-term lease obligations	$	80,559	$	62	$	80,621

Lease, Cost [Table Text Block]

The components of lease expense, a portion of which is capitalized, were as follows:

	Year ended December 31, 2020
In thousands	NW Natural		Other (NW Holdings)		NW Holdings
Operating lease expense	$	4,381	$	125	$	4,506
Short-term lease expense	$	1,010	$	—	$	1,010

	Year ended December 31, 2019
In thousands	NW Natural		Other (NW Holdings)		NW Holdings
Operating lease expense	$	4,620	$	191	$	4,811
Short-term lease expense	$	1,146	$	—	$	1,146

Operating Lease, Lease Income [Table Text Block]

The components of lease revenue at NW Natural were as follows:

	Year ended December 31,
In thousands	2020		2019
Lease revenue
Operating leases	$	88	$	171
Sales-type leases	18,355		11,198
Total lease revenue	$	18,443	$	11,369

Lessor, Operating Lease, Payments to be Received, Maturity [Table Text Block]

Total future minimum lease payments to be received under non-cancelable leases at NW Natural at December 31, 2020 are as follows:

In thousands	Operating		Sales-Type		Total
2021	$	59	$	17,518	$	17,577
2022	55		17,026		17,081
2023	47		16,557		16,604
2024	47		15,867		15,914
2025	43		15,306		15,349
Thereafter	52		251,721		251,773
Total lease revenue	$	303	$	333,995	$	334,298
Less: imputed interest			189,501
Total leases receivable			$	144,494

Operating Lease, Lease Asset and Liabilities [Table Text Block]

Supplemental balance sheet information related to operating leases as of December 31, 2020 is as follows:

In thousands	NW Natural		Other (NW Holdings)		NW Holdings
Operating lease right of use assets	$	77,328	$	118	$	77,446
Operating lease liabilities - current liabilities	$	1,054	$	51	$	1,105
Operating lease liabilities - non-current liabilities	80,559		62		80,621
Total operating lease liabilities	$	81,613	$	113	$	81,726

Supplemental balance sheet information related to operating leases as of December 31, 2019 is as follows:

In thousands	NW Natural		Other (NW Holdings)		NW Holdings
Operating lease right of use assets	$	2,760	$	190	$	2,950
Operating lease liabilities - current liabilities	$	1,979	$	122	$	2,101
Operating lease liabilities - non-current liabilities	772		69		841
Total operating lease liabilities	$	2,751	$	191	$	2,942