XML 31 R21.htm IDEA: XBRL DOCUMENT v3.25.3
Stockholders' equity
 9 Months Ended
Sep. 30, 2025
Stockholders' equity  
Stockholders' equity

Note 14 – Stockholders’ equity:

Accumulated other comprehensive loss - Changes in accumulated other comprehensive loss attributable to NL stockholders, including amounts resulting from our investment in Kronos Worldwide (see Note 6), are presented in the table below.

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Three months ended

​

Nine months ended

​

​

September 30, 

​

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)

​

See Note 12 for amounts related to our defined benefit pension plans.