CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 477,875	$ 614,391
Short-term investments	137	183
Accounts receivable, less allowance for doubtful accounts of $20,700 and $18,300, respectively	692,849	760,287
Other receivables and current assets	243,374	289,261
Total current assets	1,414,235	1,664,122
Long-term assets:
Property and equipment, net	78,539	80,838
Operating lease right-of-use assets	121,746	129,140
Goodwill	3,792,116	3,658,267
Other intangible assets, net	884,018	809,183
Other long-term assets	199,943	261,880
Deferred income taxes	114,655	84,515
Total long-term assets	5,191,017	5,023,823
Total assets	6,605,252	6,687,945
Current liabilities:
Accounts payable	14,166	14,021
Accrued bonuses and commissions	64,015	160,908
Accrued income taxes	14,715	7,698
Other accrued expenses and liabilities	176,534	198,220
Deferred revenue	374,407	413,989
Total current liabilities	643,837	794,836
Long-term liabilities:
Deferred income taxes	81,836	58,126
Long-term operating lease liabilities	105,198	112,802
Long-term debt	753,732	753,574
Other long-term liabilities	106,237	102,756
Total long-term liabilities	1,047,003	1,027,258
Commitments and contingencies
Stockholders' equity:
Preferred stock, $0.01 par value; 2,000,000 shares authorized; zero shares issued or outstanding	0	0
Common stock, $0.01 par value; 300,000,000 shares authorized; 95,267,307 shares issued	953	953
Additional paid-in capital	1,550,153	1,540,317
Retained earnings	4,953,078	4,782,930
Treasury stock, at cost: 8,505,978 and 8,317,389 shares, respectively	(1,488,337)	(1,335,627)
Accumulated other comprehensive loss	(101,435)	(122,722)
Total stockholders' equity	4,914,412	4,865,851
Total liabilities and stockholders' equity	$ 6,605,252	$ 6,687,945