Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
ASSETS
Cash and cash equivalents	$ 567,930	$ 575,615
Accounts receivable, net of allowances of $13,202 and $12,701, respectively	192,800	261,928
Prepaid expenses and other current assets	46,594	49,347
Total current assets	807,324	886,890
Long-term investments	96,575	100,079
Property and equipment, net	147,268	127,817
Operating lease right-of-use assets	97,439	125,822
Goodwill	1,661,546	1,633,033
Other purchased intangibles, net	142,018	180,022
Deferred income taxes, noncurrent	57,490	59,976
Other assets	15,785	15,676
TOTAL ASSETS	3,342,993	3,505,846
LIABILITIES AND STOCKHOLDERS’ EQUITY
Accounts payable and accrued expenses	177,820	238,059
Income taxes payable, current	12,733	17,758
Deferred revenue, current	155,806	162,855
Operating lease liabilities, current	27,673	26,927
Current portion of long-term debt	393,980	385,532
Other current liabilities	901	1,973
Total current liabilities	768,913	833,104
Long-term debt	1,075,071	1,062,929
Deferred revenue, noncurrent	11,232	12,744
Operating lease liabilities, noncurrent	87,563	104,070
Income taxes payable, noncurrent	11,675	11,675
Liability for uncertain tax positions	60,197	52,451
Deferred income taxes, noncurrent	115,356	107,453
Other long-term liabilities	36,649	10,228
TOTAL LIABILITIES	2,166,656	2,194,654
Commitments and contingencies	0	0
Preferred stock, $0.01 par value	0	0
Common stock, $0.01 par value. Authorized 95,000,000; total issued and outstanding 44,767,341 and 47,654,929 shares at September 30, 2020 and December 31, 2019, respectively.	448	476
Additional paid-in capital	451,741	465,652
Retained earnings	782,142	891,526
Accumulated other comprehensive loss	(57,994)	(46,462)
TOTAL STOCKHOLDERS’ EQUITY	1,176,337	1,311,192
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	3,342,993	3,505,846
Trade names
ASSETS
Intangible assets, net (excluding goodwill)	126,859	138,029
Customer relationships
ASSETS
Intangible assets, net (excluding goodwill)	190,689	238,502
Series A Preferred Stock
LIABILITIES AND STOCKHOLDERS’ EQUITY
Preferred stock, $0.01 par value	0	0
Series B Preferred Stock
LIABILITIES AND STOCKHOLDERS’ EQUITY
Preferred stock, $0.01 par value	$ 0	$ 0