Changes in accumulated other comprehensive income attributable to NL stockholders for the three and six months ended June 30, 2012 and 2013 are presented in the table below.


	Three months ended June 30,						Six months ended June 30,
	2012			2013			2012			2013
	(In thousands)
Accumulated other comprehensive loss, net of tax:
Marketable securities:
Balance at beginning of period	$	160,576		$	139,320		$	186,451		$	105,419
Other comprehensive income (loss)—unrealized gains (losses)arising during the year		(52,742	)		(22,075	)		(78,617	)		11,826

Balance at end of period	$	107,834		$	117,245		$	107,834		$	117,245

Currency translation:
Balance at beginning of period	$	(129,019	)	$	(140,555	)	$	(133,041	)	$	(135,165	)
Other comprehensive income (loss)		(8,428	)		1,116			(4,406	)		(4,274	)

Balance at end of period	$	(137,447	)	$	(139,439	)	$	(137,447	)	$	(139,439	)

Defined benefit pension plans:
Balance at beginning of period	$	(58,913	)	$	(65,703	)	$	(59,478	)	$	(66,402	)
Other comprehensive income—amortization of net losses included in net periodic pension cost		566			687			1,131			1,386

Balance at end of period	$	(58,347	)	$	(65,016	)	$	(58,347	)	$	(65,016	)

OPEB plans:
Balance at beginning of period	$	1,206		$	751		$	1,344		$	895
Other comprehensive loss—amortization of prior service credit and net gains included in net periodic OPEB cost		(138	)		(144	)		(276	)		(288	)

Balance at end of period	$	1,068		$	607		$	1,068		$	607

Total accumulated other comprehensive loss:
Balance at beginning of period	$	(26,150	)	$	(66,187	)	$	(4,724	)	$	(95,253	)
Other comprehensive income (loss)		(60,742	)		(20,416	)		(82,168	)		8,650

Balance at end of period	$	(86,892	)	$	(86,603	)	$	(86,892	)	$	(86,603	)