Changes in Accumulated OCI (Loss) by Component

3 Months Ended

Mar. 31, 2020

Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]

Changes in Accumulated OCI (Loss) by Component

Changes in Accumulated OCI (Loss) by Component

The following table summarizes the changes in accumulated OCI (loss) by component.

	Interest rate cash flow hedges, net of tax			Other postretirement benefits liability adjustment, net of tax			Accumulated OCI (loss), net of tax
	(Thousands)
January 1, 2019	$	(387)		$	(5,019)		$	(5,406)
Losses reclassified from accumulated OCI, net of tax	42		(a)	76		(b)	118
Change in accounting principle	—			(496)		(c)	(496)
March 31, 2019	$	(345)		$	(5,439)		$	(5,784)
January 1, 2020	$	—		$	(5,199)		$	(5,199)
Losses reclassified from accumulated OCI, net of tax	—			12		(b)	12
March 31, 2020	$	—		$	(5,187)		$	(5,187)

(a)Losses, net of tax, related to interest rate cash flow hedges were reclassified from accumulated OCI into interest expense.

(b)Losses, net of tax, related to other postretirement benefits liability adjustment are attributable to net actuarial losses and net prior service costs.

(c)Related to adoption of ASU 2018-02.