Description of Business - Additional Information (Details) $ in Millions	1 Months Ended	6 Months Ended
Mar. 31, 2019 USD ($) shares	Jun. 30, 2020 USD ($) platform
Subsidiary, Sale of Stock [Line Items]
Number of platforms \| platform		2
Public Stock Offering
Subsidiary, Sale of Stock [Line Items]
Shares sold in offering \| shares	3,175,000
Total gross proceeds from stock offering	$ 73.0
Aggregate net proceeds from stock offering	$ 68.3
Selling Stockholder
Subsidiary, Sale of Stock [Line Items]
Shares sold in offering \| shares	2,000,000
Over-Allotment Option
Subsidiary, Sale of Stock [Line Items]
Shares sold in offering \| shares	675,000
Term Loan Agreement
Subsidiary, Sale of Stock [Line Items]
Repayments of debt		$ 88.6
Senior Notes \| Convertible Notes
Subsidiary, Sale of Stock [Line Items]
Debt instrument face amount		$ 230.0
Debt instrument stated rate		2.625%
Proceeds from issuance of debt		$ 222.6

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- Definition

Sale Of Stock, Gross Consideration Received On Transaction

+ References

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Face (par) amount of debt instrument at time of issuance.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
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Contractual interest rate for funds borrowed, under the debt agreement.

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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Cash received on stock transaction after deduction of issuance costs.

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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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