CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities:
Net income	$ 86,852	$ 66,246	$ 44,060
Adjustments to reconcile net income to net cash provided by operating activities-
Depreciation	22,061	23,585	27,967
Amortization	50,447	47,667	48,984
Asset impairments	717	2,061	31,761
Gain on lease modifications	(174)	(4,349)	0
(Gain) loss on unrealized foreign currency transactions and other, net	(525)	225	(85)
Loss on derivative liability upon debt conversion	0	0	7,456
Deferred income taxes	(16,503)	(23,560)	(27,627)
Stock-based compensation	33,564	28,990	27,243
Changes in operating assets and liabilities, net of acquired amounts:
Trade accounts receivable, net	4,134	(22,401)	(51,005)
Other current and non-current assets and liabilities	(13,042)	(6,566)	(12,833)
Income taxes payable/receivable	2,126	(1,849)	9,336
Trade accounts payable and accrued liabilities	(38,486)	12,541	(36,971)
Deferred revenue	4,546	9,306	(4,689)
Net cash provided by operating activities	135,717	131,896	63,597
Cash flows from investing activities:
Purchases of software, property and equipment	(22,421)	(27,977)	(36,991)
Proceeds from sale/maturity of short-term investments	0	71	27,953
Business combinations, net of cash and settlement assets acquired of $46,432 in 2024	17,293	0	0
Net cash used in investing activities	(5,128)	(27,906)	(9,038)
Cash flows from financing activities:
Proceeds from issuance of common stock	3,072	3,284	2,969
Payments of cash dividends	(26,608)	(33,930)	(33,475)
Repurchases of common stock	(67,745)	(127,065)	(96,720)
Deferred acquisition payments	(2,488)	(3,220)	(2,314)
Proceeds from long-term debt	15,000	470,000	290,000
Payments on long-term debt	(22,500)	(327,500)	(264,801)
Purchase of capped call transactions related to convertible notes	0	(34,298)	0
Payments of deferred financing costs	0	(14,539)	0
Payments on financing obligations	(2,538)	0	0
Settlement and merchant reserve activity	23,884	35,963	52,656
Net cash used in financing activities	(79,923)	(31,305)	(51,685)
Effect of exchange rate fluctuations on cash, cash equivalents and restricted cash	(7,779)	2,173	(5,758)
Net increase (decrease) in cash, cash equivalents, and restricted cash	42,887	74,858	(2,884)
Cash, cash equivalents and restricted cash, beginning of period	463,876	389,018	391,902
Cash, cash equivalents and restricted cash, end of period	506,763	463,876	389,018
Cash paid during the period for-
Interest	27,119	24,730	18,314
Income taxes	39,944	51,675	34,671
Noncash Investing and Financing Items [Abstract]
Software, property, and equipment included in current and noncurrent liabilities	8,469	0	0
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	161,789	186,264	150,365
Settlement and merchant reserve assets	343,235	274,699	238,653
Restricted cash included in current and non-current assets	1,739	2,913	0
Total cash, cash equivalents and restricted cash	$ 506,763	$ 463,876	$ 389,018