CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income (loss)	$ (8,356)	$ 10,858	$ 41,910	$ 38,029
Other comprehensive income (loss), net of tax:
Currency translation	(6,233)	(1,859)	(13,394)	(912)
Defined benefit pension plans	828	1,133	2,557	3,428
Other postretirement benefit plans	(62)	(65)	(193)	(200)
Total other comprehensive income (loss), net	(5,467)	(791)	(11,030)	2,316
Comprehensive income (loss)	(13,823)	10,067	30,880	40,345
Comprehensive income attributable to noncontrolling interest	548	545	2,005	1,762
Comprehensive income (loss) attributable to NL stockholders	$ (14,371)	$ 9,522	$ 28,875	$ 38,583