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Redeemable Non-controlling Interest (Tables)

12 Months Ended

Dec. 31, 2024

Redeemable Noncontrolling Interest, Equity, Carrying Amount [Abstract]

Summary of Redeemable Non-controlling Interest Activity

The following table summarizes the redeemable non-controlling interest activity for the year ended December 31, 2024 and 2023:


		For the year ended December 31,
(In thousands)		2024				2023
Balance at beginning of period		$	442,152			$	—
Reclassification of non-controlling interests			1,175				443,757
Redemption of redeemable non-controlling interests			(20,384	)			(1,657	)
Net income attributable to redeemable non-controlling interests			9,824				10,092		(1)
Annual recurring compensation earned			(9,824	)			(10,092	)	(1)
Adtran Networks stock option exercises			—				52
Balance at end of period		$	422,943			$	442,152		(1)

(1) During the the third quarter of 2024, the Company identified errors primarily impacting the carrying values of the redeemable non-controlling interest, retained deficit, the net income attributable to the non-controlling interest and the net loss attributable to the Company and, as a consequence, of the loss per common share attributable to the Company. We have revised our previously issued Consolidated Financial Statements for the year ended December 31, 2023. See Note 1 for additional information.