Investments

3 Months Ended

Mar. 31, 2023

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
	March 31,				December 31,		March 31,				December 31,
In thousands	2023		2022		2022		2023		2022		2022
Investments in life insurance policies	$	47,666	$	48,486	$	49,358	$	47,666	$	48,486	$	49,358
Investments in gas reserves, non-current	22,229		25,364		22,970		22,229		25,364		22,970
Investment in unconsolidated affiliates	23,716		22,416		23,376		8,207		7,947		7,782
Total other investments	$	93,611	$	96,266	$	95,704	$	78,102	$	81,797	$	80,110