Investments

9 Months Ended

Sep. 30, 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
	September 30,				December 31,		September 30,				December 31,
In thousands	2023		2022		2022		2023		2022		2022
Investments in life insurance policies	$	46,870	$	49,043	$	49,358	$	46,870	$	49,043	$	49,358
Investments in gas reserves, non-current	21,439		23,770		22,970		21,439		23,770		22,970
Investment in unconsolidated affiliates	36,253		23,756		23,376		19,444		8,058		7,782
Total other investments	$	104,562	$	96,569	$	95,704	$	87,753	$	80,871	$	80,110