Basis of Presentation and Summary of Significant Accounting Policies - (Tables)

9 Months Ended

Oct. 31, 2019

Accounting Policies [Abstract]

Deferred Commissions

Changes in total deferred commissions during the periods presented are as follows (in thousands):

	Three Months Ended October 31,				Nine Months Ended October 31,
	2018		2019		2018		2019
Beginning balance (1)	$	91,469	$	118,568	$	87,313	$	114,973
Additions	31,884		34,071		71,887		82,381
Recognition of deferred commissions	(26,913)		(29,508)		(62,760)		(74,223)
Ending balance	$	96,440	$	123,131	$	96,440	$	123,131

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⁽¹⁾ Balance as of January 31, 2018 was adjusted to reflect the adoption of ASC 606.

Deferred Revenue

Changes in total deferred revenue during the periods presented are as follows (in thousands):

	Three Months Ended October 31,				Nine Months Ended October 31,
	2018		2019		2018		2019
Beginning balance (1)	$	413,247	$	607,263	$	374,102	$	535,920
Additions	122,681		142,164		290,463		400,605
Recognition of deferred revenue	(74,740)		(106,229)		(203,377)		(293,327)
Ending balance	$	461,188	$	643,198	$	461,188	$	643,198

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⁽¹⁾ Balance as of January 31, 2018 was adjusted to reflect the adoption of ASC 606.