ACCUMULATED OTHER COMPREHENSIVE LOSS (AOCL)

12 Months Ended

Dec. 31, 2020

Equity [Abstract]

ACCUMULATED OTHER COMPREHENSIVE LOSS (AOCL)

ACCUMULATED OTHER COMPREHENSIVE LOSS (AOCL):

The following table presents the changes in SJI's AOCL, net of tax, for the years ended December 31, 2020, 2019, and 2018 (in thousands):

	Postretirement Liability Adjustment		Unrealized Gain (Loss) on Derivatives-Other		Unrealized Gain (Loss) on Available-for-Sale Securities		Other Comprehensive Income (Loss) of Affiliated Companies		Total
Balance at January 1, 2018	$	(36,262)	$	(396)	$	(10)	$	(97)	$	(36,765)
Other comprehensive income before reclassifications	10,636		—		—		—		10,636
Amounts reclassified from AOCL	—		34		—		—		34
Net current period other comprehensive income	10,636		34		—		—		10,670
Balance at December 31, 2018	(25,626)		(362)		(10)		(97)		(26,095)
Other comprehensive loss before reclassifications	(6,498)		—		—		—		(6,498)
Amounts reclassified from AOCL	—		35		—		—		35
Net current period other comprehensive (loss) income	(6,498)		35		—		—		(6,463)
Balance at December 31, 2019	(32,124)		(327)		(10)		(97)		(32,558)
Other comprehensive loss before reclassifications	(5,692)		—		—		—		(5,692)
Amounts reclassified from AOCL	—		34		—		—		34
Net current period other comprehensive (loss) income	(5,692)		34		—		—		(5,658)
Balance at December 31, 2020	$	(37,816)	$	(293)	$	(10)	$	(97)	$	(38,216)

The following table presents the changes in SJG's AOCL, net of tax, for the years ended December 31, 2020, 2019, and 2018 (in thousands):

	Postretirement Liability Adjustment		Unrealized Gain (Loss) on Derivatives-Other		Total
Balance at January 1, 2018	$	(25,507)	$	(490)	$	(25,997)
Other comprehensive income before reclassifications	3,606		—		3,606
Amounts reclassified from AOCL	—		34		34
Net current period other comprehensive income	3,606		34		3,640
Balance at December 31, 2018	(21,901)		(456)		(22,357)
Other comprehensive loss before reclassifications	(5,553)		—		(5,553)
Amounts reclassified from AOCL	—		35		35
Net current period other comprehensive (loss) income	(5,553)		35		(5,518)
Balance at December 31, 2019	(27,454)		(421)		(27,875)
Other comprehensive loss before reclassifications	(3,765)		—		(3,765)
Amounts reclassified from AOCL	—		34		34
Net current period other comprehensive (loss) income	(3,765)		34		(3,731)
Balance at December 31, 2020	$	(31,219)	$	(387)	$	(31,606)