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Organization and summary of significant accounting policies.

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

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Period when accrued interest on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), is considered uncollectible and written off, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of writeoff of accrued interest on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), recognized by reversing interest income.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Carrying amount as of the balance sheet date of current interest earned but not received. Also called accrued interest or accrued interest receivable. For classified balance sheets, represents the current amount receivable, that is amounts expected to be collected within one year or the normal operating cycle, if longer.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Organization and Summary of Significant Accounting Policies - Additional Information (Details) shares in Millions	1 Months Ended	12 Months Ended
	Dec. 31, 2020 USD ($) shares	Dec. 31, 2020 USD ($) segment subsidiary shares	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 USD ($)
Organization And Summary Of Significant Accounting Policies [Line Items]
Number of wholly owned Irish subsidiaries \| subsidiary		2
Number of operating segments \| segment		1
Number of reportable segments \| segment		1
Accrued interest receivables write-off threshold period	90 days	90 days
Accrued interest receivables	$ 3,700,000	$ 3,700,000
Accrued interest receivables write-off		0	$ 0	$ 0
Depreciation		8,600,000	7,400,000	4,000,000.0
Advertising expense		$ 64,800,000	$ 40,600,000	$ 20,500,000
PRSUs
Organization And Summary Of Significant Accounting Policies [Line Items]
Ending Balance, Unvested (in shares) \| shares	0.2	0.2	0.3
2.25% Convertible senior notes due 2024
Organization And Summary Of Significant Accounting Policies [Line Items]
Shares issued to settle notes at initial conversion rate (in shares) \| shares	5.0
ESPP
Organization And Summary Of Significant Accounting Policies [Line Items]
Share based compensation arrangement by share based payment award purchase period		6 months
Revenue, Product and Service Benchmark \| Customer Concentration Risk \| Largest two customers
Organization And Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage		86.00%	86.00%
Revenue, Product and Service Benchmark \| Customer Concentration Risk \| Largest three customers
Organization And Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage				93.00%
Minimum
Organization And Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		3 years
Share-based compensation arrangement by share-based payment award, award requisite service period		3 years
Maximum
Organization And Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		7 years
Share-based compensation arrangement by share-based payment award, award requisite service period		4 years