Derivative Instruments (Tables)

3 Months Ended

Mar. 31, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Notional Amounts of Outstanding Derivative Positions

The following table presents the absolute notional amounts related to open positions on NW Natural derivative instruments:

	March 31,				December 31,
In thousands	2020		2019		2019
Natural gas (in therms):
Financial	487,420		255,550		651,540
Physical	369,450		422,825		512,849
Foreign exchange	$	9,885	$	7,241	$	6,650

Income Statement Presentation of Derivative Instruments

The following table reflects the income statement presentation for the unrealized gains and losses from NW Natural's derivative instruments, which also represents all derivative instruments at NW Holdings:

	Three Months Ended March 31,
	2020						2019
In thousands	Natural gas commodity			Foreign exchange			Natural gas commodity			Foreign exchange
Benefit (expense) to cost of gas	$	(5,343	)	$	(466	)	$	7,007		$	(89	)
Operating revenues (expense)	(2,433		)	—			2,367			—
Amounts deferred to regulatory accounts on balance sheet	7,405			466			(9,029		)	89
Total gain (loss) in pre-tax earnings	$	(371	)	$	—		$	345		$	—