CONDENSED CONSOLIDATED BALANCE SHEETS - UNAUDITED - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 120,810	$ 186,264
Settlement and merchant reserve assets	192,962	274,699
Trade accounts receivable:
Billed, net of allowance of $5,692 and $5,432	275,359	267,680
Unbilled	84,347	82,163
Income taxes receivable	2,364	1,345
Other current assets	57,960	50,075
Total current assets	733,802	862,226
Non-current assets:
Property and equipment, net of depreciation of $126,435 and $121,816	60,834	65,545
Operating lease right-of-use assets	31,472	34,283
Intangible Assets	46,883	50,103
Goodwill	306,581	308,596
Customer contract costs, net of amortization of $39,539 and $42,094	54,535	54,421
Deferred income taxes	49,552	57,855
Other assets	9,293	10,017
Total non-current assets	559,150	580,820
Total assets	1,292,952	1,443,046
Current liabilities:
Current portion of long-term debt	7,500	7,500
Operating lease liabilities	15,400	15,946
Customer deposits	36,967	41,035
Trade accounts payable	43,768	46,406
Accrued employee compensation	44,006	84,380
Settlement and merchant reserve liabilities	191,498	273,817
Deferred revenue	56,404	54,199
Income taxes payable	1,886	4,104
Other current liabilities	23,738	33,449
Total current liabilities	421,167	560,836
Non-current liabilities:
Long-term debt, net of unamortized discounts of $14,764 and $15,628	533,986	534,997
Operating lease liabilities	31,099	34,360
Deferred revenue	23,382	23,447
Income taxes payable	3,117	3,041
Deferred income taxes	124	123
Other non-current liabilities	10,737	12,916
Total non-current liabilities	602,445	608,884
Total liabilities	1,023,612	1,169,720
Stockholders' equity:
Preferred stock, par value $.01 per share; 10,000 shares authorized; zero shares issued and outstanding	0	0
Common stock, par value $.01 per share; 100,000 shares authorized;29,779 and 29,541 shares outstanding	717	713
Additional paid-in capital	491,005	490,947
Treasury stock, at cost; 40,583 and 40,398 shares	(1,145,738)	(1,136,055)
Accumulated other comprehensive income (loss):
Unrealized gain on short-term investments, net of tax	0	1
Cumulative foreign currency translation adjustments	(55,388)	(50,414)
Accumulated earnings	978,744	968,134
Total stockholders' equity	269,340	273,326
Total liabilities and stockholders' equity	1,292,952	1,443,046
Software
Non-current assets:
Intangible Assets	13,406	14,224
Acquired customer contracts
Non-current assets:
Intangible Assets	$ 33,477	$ 35,879