Three months ended

Nine months ended

September 30,

2021

2022

2021

2022

(In thousands)

Accumulated other comprehensive loss, net of tax:

Currency translation:

Balance at beginning of period

$

(168,628)

$

(178,396)

$

(169,575)

$

(171,235)

Other comprehensive loss

(1,859)

(6,233)

(912)

(13,394)

Balance at end of period

$

(170,487)

$

(184,629)

$

(170,487)

$

(184,629)

Defined benefit pension plans:

Balance at beginning of period

$

(78,409)

$

(66,739)

$

(80,704)

$

(68,468)

Other comprehensive income - amortization of net
losses included in net periodic pension cost

1,133

828

3,428

2,557

Balance at end of period

$

(77,276)

$

(65,911)

$

(77,276)

$

(65,911)

OPEB plans:

Balance at beginning of period

$

(1,045)

$

(1,184)

$

(910)

$

(1,053)

Other comprehensive loss - amortization of net
gains included in net periodic OPEB cost

(65)

(62)

(200)

(193)

Balance at end of period

$

(1,110)

$

(1,246)

$

(1,110)

$

(1,246)

Total accumulated other comprehensive loss:

Balance at beginning of period

$

(248,082)

$

(246,319)

$

(251,189)

$

(240,756)

Other comprehensive income (loss)

(791)

(5,467)

2,316

(11,030)

Balance at end of period

$

(248,873)

$

(251,786)

$

(248,873)

$

(251,786)