Three months ended

Nine months ended

September 30,

2024

2025

2024

2025

(In thousands)

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

Currency translation:

Balance at beginning of period

$

(181,619)

$

(177,801)

$

(177,119)

$

(185,423)

Other comprehensive income (loss)

1,521

30

(2,979)

7,652

Balance at end of period

$

(180,098)

$

(177,771)

$

(180,098)

$

(177,771)

Defined benefit pension plans:

Balance at beginning of period

$

(40,616)

$

(36,026)

$

(41,373)

$

(36,666)

Other comprehensive income -

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

378

326

1,135

966

Balance at end of period

$

(40,238)

$

(35,700)

$

(40,238)

$

(35,700)

OPEB plans:

Balance at beginning of period

$

(1,206)

$

(1,331)

$

(1,114)

$

(1,267)

Other comprehensive loss -

Amortization of net gain included in net periodic OPEB cost

(45)

(31)

(137)

(95)

Balance at end of period

$

(1,251)

$

(1,362)

$

(1,251)

$

(1,362)

Marketable debt securities:

Balance at beginning of period

$

7

$

—

$

(15)

$

—

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

(7)

—

15

—

Balance at end of period

$

—

$

—

$

—

$

—

Total accumulated other comprehensive loss:

Balance at beginning of period

$

(223,434)

$

(215,158)

$

(219,621)

$

(223,356)

Other comprehensive income (loss)

1,847

325

(1,966)

8,523

Balance at end of period

$

(221,587)

$

(214,833)

$

(221,587)

$

(214,833)