Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Balance at beginning of period (in shares) at Dec. 31, 2020		156,520,000
Balance at beginning of period at Dec. 31, 2020	$ 3,010,687	$ 157	$ 3,112,262	$ 127,212	$ (228,944)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Foreign currency translation adjustment	(103,954)			(103,954)
Unrealized loss on investments, net of taxes	0
Net loss	(27,763)				(27,763)
Comprehensive loss	(131,717)
Exercise of stock options (in shares)		161,000
Exercise of stock options	527		527
Restricted stock units issued, net of shares withheld for taxes (in shares)		986,000
Restricted stock units issued, net of shares withheld for taxes	(10,526)	$ 1	(10,527)
Issuance of stock (in shares)		455,000
Issuance of stock	500		500
Issuance of stock under employee stock purchase plan (in shares)		281,000
Issuance of stock under employee stock purchase plan	5,658		5,658
Distribution of N-able business	(365,443)		(365,443)
Special dividends paid ($1.50 per share)	(237,214)		(237,214)
Stock-based compensation	50,027		50,027
Balance at end of period (in shares) at Sep. 30, 2021		158,403,000
Balance at end of period at Sep. 30, 2021	2,322,499	$ 158	2,555,790	23,258	(256,707)
Balance at beginning of period (in shares) at Jun. 30, 2021		158,015,000
Balance at beginning of period at Jun. 30, 2021	2,971,713	$ 158	3,140,176	79,107	(247,728)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Foreign currency translation adjustment	(55,849)			(55,849)
Unrealized loss on investments, net of taxes	0
Net loss	(8,979)				(8,979)
Comprehensive loss	(64,828)
Exercise of stock options (in shares)		69,000
Exercise of stock options	126		126
Restricted stock units issued, net of shares withheld for taxes (in shares)		138,000
Restricted stock units issued, net of shares withheld for taxes	(658)		(658)
Issuance of stock (in shares)		8,000
Issuance of stock	8		8
Issuance of stock under employee stock purchase plan (in shares)		173,000
Issuance of stock under employee stock purchase plan	2,529		2,529
Distribution of N-able business	(365,443)		(365,443)
Special dividends paid ($1.50 per share)	(237,214)		(237,214)
Stock-based compensation	16,266		16,266
Balance at end of period (in shares) at Sep. 30, 2021		158,403,000
Balance at end of period at Sep. 30, 2021	$ 2,322,499	$ 158	2,555,790	23,258	(256,707)
Balance at beginning of period (in shares) at Dec. 31, 2021	159,176,042	159,176,000
Balance at beginning of period at Dec. 31, 2021	$ 2,287,896	$ 159	2,566,783	1,306	(280,352)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Foreign currency translation adjustment	(114,099)			(114,099)
Unrealized loss on investments, net of taxes	(214)			(214)
Net loss	(919,002)				(919,002)
Comprehensive loss	(1,033,315)
Exercise of stock options (in shares)		52,000
Exercise of stock options	58		58
Restricted stock units issued, net of shares withheld for taxes (in shares)		1,738,000
Restricted stock units issued, net of shares withheld for taxes	(9,083)	$ 2	(9,085)
Issuance of stock (in shares)		61,000
Issuance of stock	236		236
Issuance of stock under employee stock purchase plan (in shares)		312,000
Issuance of stock under employee stock purchase plan	3,151		3,151
Stock-based compensation	$ 51,522		51,522
Balance at end of period (in shares) at Sep. 30, 2022	161,338,727	161,339,000
Balance at end of period at Sep. 30, 2022	$ 1,300,465	$ 161	2,612,665	(113,007)	(1,199,354)
Balance at beginning of period (in shares) at Jun. 30, 2022		160,871,000
Balance at beginning of period at Jun. 30, 2022	1,617,807	$ 161	2,594,192	(69,411)	(907,135)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Foreign currency translation adjustment	(43,534)			(43,534)
Unrealized loss on investments, net of taxes	(62)			(62)
Net loss	(292,219)				(292,219)
Comprehensive loss	(335,815)
Exercise of stock options (in shares)		18,000
Exercise of stock options	21		21
Restricted stock units issued, net of shares withheld for taxes (in shares)		284,000
Restricted stock units issued, net of shares withheld for taxes	(1,201)		(1,201)
Issuance of stock (in shares)		4,000
Issuance of stock	9		9
Issuance of stock under employee stock purchase plan (in shares)		162,000
Issuance of stock under employee stock purchase plan	1,398		1,398
Stock-based compensation	$ 18,246		18,246
Balance at end of period (in shares) at Sep. 30, 2022	161,338,727	161,339,000
Balance at end of period at Sep. 30, 2022	$ 1,300,465	$ 161	$ 2,612,665	$ (113,007)	$ (1,199,354)