Organization, Business and Summary of Significant Accounting Policies - Additional Information (Detail)		12 Months Ended
	Dec. 19, 2019 shares	Dec. 31, 2020 USD ($) Location Country Datacenter Lab Segment Customer ReportingUnit	Dec. 31, 2019 USD ($) Customer
Organization Business And Summary Of Significant Accounting Policies [Line Items]
Number of countries | Country		18
Number of data centers | Datacenter		9
Number of data recovery labs | Lab		18
Date of incorporation		Aug. 02, 2018
Number of business segment | Segment		1
Revenues		$ 289,545,000	$ 312,054,000
Depreciation expense		16,900,000	18,600,000
Impairment losses recognized		0
Amortization expense		$ 30,900,000	31,800,000
Number of reporting unit | ReportingUnit		1
Research and development		$ 7,167,000	5,945,000
Pivotal Acquisition Corp. [Member]
Organization Business And Summary Of Significant Accounting Policies [Line Items]
Business combination, aggregate shares of common stock received by stockholders | shares	34,800,000
Business combination, outstanding shares | shares	3,707,564
Business combination, stock exchange ratio | shares	9.3862
Cost of Revenues [Member]
Organization Business And Summary Of Significant Accounting Policies [Line Items]
Amortization expense		11,800,000	11,300,000
Sales and Marketing [Member]
Organization Business And Summary Of Significant Accounting Policies [Line Items]
Advertising costs		4,500,000	7,100,000
Internal-Use Software Development [Member]
Organization Business And Summary Of Significant Accounting Policies [Line Items]
Capitalized software costs		18,500,000	13,500,000
UK and Germany [Member]
Organization Business And Summary Of Significant Accounting Policies [Line Items]
Revenues		57,000,000	69,800,000
Long-lived assets		$ 26,300,000	$ 21,800,000
Consolidated Revenues [Member] | Customer Concentration Risk [Member]
Organization Business And Summary Of Significant Accounting Policies [Line Items]
Number of customers representing more than 5% of consolidated revenues or accounts receivable | Customer		0	0
Accounts Receivable [Member] | Customer Concentration Risk [Member]
Organization Business And Summary Of Significant Accounting Policies [Line Items]
Number of customers representing more than 5% of consolidated revenues or accounts receivable | Customer		0	0
Minimum [Member]
Organization Business And Summary Of Significant Accounting Policies [Line Items]
Number of locations | Location		32
Minimum [Member] | Internal-Use Software Development [Member]
Organization Business And Summary Of Significant Accounting Policies [Line Items]
Estimated useful life		3 years
Maximum [Member] | Internal-Use Software Development [Member]
Organization Business And Summary Of Significant Accounting Policies [Line Items]
Estimated useful life		5 years