CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss
Beginning balance at Dec. 31, 2023	$ 1,324,297	$ 702	$ 712,994	$ 1,394,967	$ (674,896)	$ (109,470)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	23,136			23,136
Other comprehensive income (loss)	(4,612)					(4,612)
Stock-based compensation	18,819		18,819
Shares issued and forfeited, net, under stock plans	2,148		(13,254)		15,402
Repurchase of shares of common stock	(120,693)				(120,693)
Repurchase of stock-based compensation awards for tax withholdings	(6,339)				(6,339)
Ending balance at Jun. 30, 2024	1,236,756	702	718,559	1,418,103	(786,526)	(114,082)
Beginning balance at Mar. 31, 2024	1,257,053	702	714,936	1,387,216	(733,927)	(111,874)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	30,887			30,887
Other comprehensive income (loss)	(2,208)					(2,208)
Stock-based compensation	10,720		10,720
Shares issued and forfeited, net, under stock plans	969		(7,097)		8,066
Repurchase of shares of common stock	(57,628)				(57,628)
Repurchase of stock-based compensation awards for tax withholdings	(3,037)				(3,037)
Ending balance at Jun. 30, 2024	1,236,756	702	718,559	1,418,103	(786,526)	(114,082)
Beginning balance at Dec. 31, 2024	1,424,327	702	731,927	1,598,085	(784,914)	(121,473)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	71,072			71,072
Other comprehensive income (loss)	22,530					22,530
Stock-based compensation	28,038		28,038
Shares issued and forfeited, net, under stock plans	2,413		(26,423)		28,836
Repurchase of shares of common stock	(134,656)				(134,656)
Repurchase of stock-based compensation awards for tax withholdings	(20,226)				(20,226)
Ending balance at Jun. 30, 2025	1,393,498	702	733,542	1,669,157	(910,960)	(98,943)
Beginning balance at Mar. 31, 2025	1,482,600	702	735,751	1,656,955	(797,214)	(113,594)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	12,202			12,202
Other comprehensive income (loss)	14,651					14,651
Stock-based compensation	16,411		16,411
Shares issued and forfeited, net, under stock plans	1,038		(18,620)		19,658
Repurchase of shares of common stock	(120,248)				(120,248)
Repurchase of stock-based compensation awards for tax withholdings	(13,156)				(13,156)
Ending balance at Jun. 30, 2025	$ 1,393,498	$ 702	$ 733,542	$ 1,669,157	$ (910,960)	$ (98,943)

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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- Definition

Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest.

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ACI WORLDWIDE, INC. 10-Q