Three months ended

Nine months ended

September 30,

2023

2024

2023

2024

(In thousands)

Accumulated other comprehensive loss, (net of tax and noncontrolling interest):

Currency translation:

Balance at beginning of period

$

(181,076)

$

(181,619)

$

(178,191)

$

(177,119)

Other comprehensive income (loss)

(345)

1,521

(3,230)

(2,979)

Balance at end of period

$

(181,421)

$

(180,098)

$

(181,421)

$

(180,098)

Defined benefit pension plans:

Balance at beginning of period

$

(38,788)

$

(40,616)

$

(43,857)

$

(41,373)

Other comprehensive income -

Amortization of prior service cost and net losses included in
net periodic pension cost

392

378

1,319

1,135

Plan settlement

—

4,142

—

Balance at end of period

$

(38,396)

$

(40,238)

$

(38,396)

$

(40,238)

OPEB plans:

Balance at beginning of period

$

(1,011)

$

(1,206)

$

(893)

$

(1,114)

Other comprehensive loss -

Amortization of net gain included in net periodic
OPEB cost

(57)

(45)

(175)

(137)

Balance at end of period

$

(1,068)

$

(1,251)

$

(1,068)

$

(1,251)

Marketable debt securities:

Balance at beginning of period

$

(223)

$

7

$

(50)

$

(15)

Other comprehensive income (loss) - unrealized gain (loss)
arising during the period

81

(7)

(92)

15

Balance at end of period

$

(142)

$

—

$

(142)

$

—

Total accumulated other comprehensive loss:

Balance at beginning of period

$

(221,098)

$

(223,434)

$

(222,991)

$

(219,621)

Other comprehensive income (loss)

71

1,847

1,964

(1,966)

Balance at end of period

$

(221,027)

$

(221,587)

$

(221,027)

$

(221,587)