CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 657,421	$ 667,667
Short-term investments	344	361
Accounts receivable, less allowance for doubtful accounts of $14,600	513,738	645,891
Other receivables and current assets	278,375	324,655
Total current assets	1,449,878	1,638,574
Long-term assets:
Property and equipment, net	84,678	87,914
Operating lease right-of-use assets	130,274	120,881
Goodwill	3,399,897	3,409,271
Other intangible assets, net	739,059	763,119
Other long-term assets	227,383	279,676
Deferred income taxes	22,014	24,879
Total long-term assets	4,603,305	4,685,740
Total assets	6,053,183	6,324,314
Current liabilities:
Accounts payable	17,102	10,863
Accrued bonuses and commissions	30,646	163,182
Accrued income taxes	7,065	8,410
Current portion of long-term debt	9,125	0
Other accrued expenses and liabilities	184,663	204,509
Deferred revenue	386,019	391,528
Total current liabilities	634,620	778,492
Long-term liabilities:
Deferred income taxes	99,439	105,548
Long-term operating lease liabilities	114,238	104,378
Long-term debt	744,575	753,576
Other long-term liabilities	96,360	98,272
Total long-term liabilities	1,054,612	1,061,774
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	1,415,407	1,465,694
Retained earnings	4,330,208	4,259,220
Treasury stock, at cost: 8,285,245 and 8,188,331 shares, respectively	(1,304,413)	(1,185,707)
Accumulated other comprehensive loss	(78,204)	(56,112)
Total stockholders' equity	4,363,951	4,484,048
Total liabilities and stockholders' equity	$ 6,053,183	$ 6,324,314
Common stock, shares issued	95,267,307	95,267,307