Payment for contingent consideration liability.

No definition available.

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- Definition

Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Topic 230
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- Definition

Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled beyond one year or the normal operating cycle, if longer.

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- Definition

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.

+ References

No definition available.

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- Definition

The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

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- Definition

Net asset value per share or per unit of investments in certain entities that calculate net asset value per share. Includes, but is not limited to, by unit, membership interest, or other ownership interest. Investment includes, but is not limited to, investment in certain hedge funds, venture capital funds, private equity funds, real estate partnerships or funds. Excludes fair value disclosure.

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- Definition

Fair value portion of notes payable.

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Fair Value Measurements - Additional Information (Details) - USD ($)		3 Months Ended		22 Months Ended
	Jun. 01, 2018	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Dec. 31, 2019	Nov. 30, 2017
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Charge (benefit) related to changes in fair value of contingent consideration		$ 500,000	$ 3,100,000
Contingent consideration, fair value		9,680,000		$ 9,680,000	$ 9,220,000
1.75% Convertible Senior Notes Due 2022
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Debt instrument fixed interest rate per annum						1.75%
1.75% Convertible Senior Notes Due 2022 \| Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of convertible senior notes		$ 187,100,000		$ 187,100,000	$ 195,400,000
Debt instrument fixed interest rate per annum		1.75%		1.75%	1.75%
Ahalogy
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent consideration paid out	$ 14,600,000	$ 27,000,000.0		$ 12,400,000
Contingent consideration, fair value	$ 14,600,000	$ 0		$ 0
Money Market Funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed net asset value		$ 1.0		$ 1.0