The cash inflow from the additional capital contribution to the entity.

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Subsequent Events - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
	Apr. 01, 2022	Mar. 31, 2022	Mar. 31, 2021
Subsequent Event [Line Items]
Proceeds from common stock issued, net		$ 9,938	$ 0
Subsequent Event [Member]
Subsequent Event [Line Items]
Stock Issued During Period, Shares, New Issues	2,875
Proceeds from common stock issued, net	$ 138,600
Subsequent Event [Member] \| Northwest Natural Gas Company [Member]
Subsequent Event [Line Items]
Repayments of Short-term Debt	$ 130,000