Accumulated Other Comprehensive Income (Loss) (Tables)

9 Months Ended

Sep. 30, 2018

Stockholders Equity Note [Abstract]

Schedule of Changes in Accumulated Other Comprehensive Income (Loss)

Changes in accumulated other comprehensive income (loss) attributable to NL stockholders, including amounts resulting from our investment in Kronos Worldwide (see Note 5), are presented in the table below.

	Three months ended						Nine months ended
	September 30,						September 30,
	2017			2018			2017			2018
	(In thousands)
Accumulated other comprehensive loss, net of tax:
Marketable securities:
Balance at beginning of period	$	15,882		$	-		$	20,473		$	46,069
Change in accounting principle		-			-			-			(46,069	)
Balance at beginning of period, as adjusted	$	15,882		$	-		$	20,473		$	-
Other comprehensive loss -    unrealized losses arising    during the year		(5,260	)		-			(9,851	)		-
Balance at end of period	$	10,622		$	-		$	10,622		$	-
Currency translation:
Balance at beginning of period	$	(171,163	)	$	(167,984	)	$	(175,859	)	$	(164,467	)
Other comprehensive income (loss)		5,908			1,103			10,604			(2,414	)
Balance at end of period	$	(165,255	)	$	(166,881	)	$	(165,255	)	$	(166,881	)
Interest rate swap:
Balance at beginning of period	$	(362	)	$	-		$	(390	)	$	-
Other comprehensive income (loss):
Unrealized losses arising during the year		(119	)		-			(296	)		-
Less reclassification adjustment for    amounts included in interest expense		481			-			686			-
Balance at end of period	$	-		$	-		$	-		$	-
Defined benefit pension plans:
Balance at beginning of period	$	(75,450	)	$	(70,994	)	$	(76,710	)	$	(72,951	)
Other comprehensive income -    amortization of net losses included    in net periodic pension cost		738			959			1,998			2,916
Balance at end of period	$	(74,712	)	$	(70,035	)	$	(74,712	)	$	(70,035	)
OPEB plans:
Balance at beginning of period	$	(456	)	$	(526	)	$	(360	)	$	(388	)
Other comprehensive loss - amortization of net gains included in net periodic OPEB cost		(49	)		(65	)		(145	)		(203	)
Balance at end of period	$	(505	)	$	(591	)	$	(505	)	$	(591	)
Total accumulated other comprehensive loss:
Balance at beginning of period	$	(231,549	)	$	(239,504	)	$	(232,846	)	$	(191,737	)
Change in accounting principle		-			-			-			(46,069	)
Balance at beginning of period, as adjusted	$	(231,549	)	$	(239,504	)	$	(232,846	)	$	(237,806	)
Other comprehensive income		1,699			1,997			2,996			299
Balance at end of period	$	(229,850	)	$	(237,507	)	$	(229,850	)	$	(237,507	)