Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 165,493	$ 173,857
Accounts receivable (less allowance for losses and sales adjustments of $22,829 in 2023 and $14,761 in 2022)	619,704	577,257
Short-term investments	10,385	37,030
Prepaid expenses	54,700	50,859
Other current assets	10,303	8,239
Total current assets	860,585	847,242
Accounts receivable, long-term	8,988	8,271
Operating lease right-of-use assets	39,039	50,989
Property and equipment, net	169,720	172,786
Other assets:
Software development costs, net	67,124	48,189
Goodwill	2,532,109	2,489,308
Other intangibles, net	928,870	1,002,164
Non-current investments	7,046	18,508
Other non-current assets	63,182	49,960
Total assets	4,676,663	4,687,417
Current liabilities:
Accounts payable	146,339	104,813
Accrued liabilities	158,558	131,941
Operating lease liabilities	11,060	10,736
Current income tax payable	2,466	43,667
Deferred revenue	632,914	568,538
Current portion of term loans	49,801	30,000
Total current liabilities	1,001,138	889,695
Term loans, net	0	362,905
Convertible senior notes due 2026, net	596,206	594,484
Deferred revenue, long-term	291	2,037
Deferred income taxes	78,590	148,891
Operating lease liabilities, long-term	39,822	48,049
Other long-term liabilities	22,621	16,967
Total liabilities	1,738,668	2,063,028
Commitments and contingencies	0	0
Shareholders' equity:
Preferred stock, $10.00 par value; 1,000,000 shares authorized; none issued	0	0
Common stock, $0.01 par value; 100,000,000 shares authorized; 48,147,969 shares issued in 2023 and 2022	481	481
Additional paid-in capital	1,354,787	1,209,725
Accumulated other comprehensive loss, net of tax	(326)	(844)
Retained earnings	1,603,773	1,437,854
Treasury stock, at cost; 5,858,476 and 6,364,991 shares in 2023 and 2022, respectively	(20,720)	(22,827)
Total shareholders' equity	2,937,995	2,624,389
Total liabilities and shareholders' equity	$ 4,676,663	$ 4,687,417