CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 507,689	$ 614,391
Short-term investments	165	183
Accounts receivable, less allowance for doubtful accounts of $18,300	653,763	760,287
Other receivables and current assets	222,459	289,261
Total current assets	1,384,076	1,664,122
Long-term assets:
Property and equipment, net	80,825	80,838
Operating lease right-of-use assets	127,198	129,140
Goodwill	3,737,195	3,658,267
Other intangible assets, net	870,544	809,183
Other long-term assets	196,305	261,880
Deferred income taxes	84,791	84,515
Total long-term assets	5,096,858	5,023,823
Total assets	6,480,934	6,687,945
Current liabilities:
Accounts payable	21,938	14,021
Accrued bonuses and commissions	37,584	160,908
Accrued income taxes	10,908	7,698
Other accrued expenses and liabilities	184,154	198,220
Deferred revenue	396,331	413,989
Total current liabilities	650,915	794,836
Long-term liabilities:
Deferred income taxes	83,758	58,126
Long-term operating lease liabilities	110,227	112,802
Long-term debt	753,653	753,574
Other long-term liabilities	100,219	102,756
Total long-term liabilities	1,047,857	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	1,505,788	1,540,317
Retained earnings	4,883,552	4,782,930
Treasury stock, at cost: 8,611,394 and 8,317,389 shares, respectively	(1,498,693)	(1,335,627)
Accumulated other comprehensive loss	(109,438)	(122,722)
Total stockholders' equity	4,782,162	4,865,851
Total liabilities and stockholders' equity	$ 6,480,934	$ 6,687,945