Convertible Senior Notes and Capped Calls - Impact to Shareholders' Equity (Details) - The Notes [Member] $ in Thousands	1 Months Ended
Aug. 31, 2018 USD ($)
Debt Instrument [Line Items]
Conversion option	$ 53,820
Purchase of capped calls	(26,910)
Issuance costs	(1,626)
Total	$ 25,284

Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Conversion Option

No definition available.

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- Definition

Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Issuance Costs

+ References

No definition available.

+ Details

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- Definition

Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Option Indexed To Issuer's Equity

+ References

No definition available.

+ Details

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- Definition

Adjustment to additional paid in capital resulting from the recognition of convertible debt instruments as two separate components - a debt component and an equity component. This bifurcation may result in a basis difference associated with the liability component that represents a temporary difference for purposes of applying accounting for income taxes. The initial recognition of deferred taxes for the tax effect of that temporary difference is as an adjustment to additional paid in capital.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 25
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=51819886&loc=SL6014347-161799

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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.

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No definition available.

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