Business Combination (Details) - USD ($) $ in Thousands	1 Months Ended
	Aug. 31, 2018	Jan. 31, 2019	Jan. 31, 2018
Business Acquisition [Line Items]
Goodwill		$ 10,997	$ 0	[1]
Acquisition consideration held back		$ 3,725	$ 0
StorReduce, Inc.
Business Acquisition [Line Items]
Cash consideration transferred	$ 20,500
Long-term debt assumed and subsequently paid off	6,100
Fees assumed associated with the transaction	1,100
Goodwill	11,000
Net liabilities assumed	4,500
Deferred tax liabilities assumed	3,700
Acquisition consideration held back	$ 3,700
StorReduce, Inc. | Unvested restricted stock units
Business Acquisition [Line Items]
Equity interests issued and issuable, shares issued (in shares)	622,482
Equity interests issued and issuable	$ 13,600
StorReduce, Inc. | Developed technology
Business Acquisition [Line Items]
Finite-lived intangibles acquired	$ 17,700
Finite-lived intangibles acquired, amortization period	7 years

[1] * As adjusted to reflect the impact of the full retrospective adoption of ASC 606