Investments

6 Months Ended

Jun. 30, 2022

Investments [Abstract]

Investment [Table Text Block]

Investments include gas reserves, financial investments in life insurance policies, and equity method investments. The following table summarizes other investments:

	NW Holdings						NW Natural
	June 30,				December 31,		June 30,				December 31,
In thousands	2022		2021		2021		2022		2021		2021
Investments in life insurance policies	$	48,735	$	47,695	$	48,178	$	48,735	$	47,695	$	48,178
Investments in gas reserves, non-current	24,695		29,852		26,608		24,695		29,852		26,608
Investment in unconsolidated affiliates	22,597		30		14,492		8,056		—		—
Total other investments	$	96,027	$	77,577	$	89,278	$	81,486	$	77,547	$	74,786