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Significant Accounting Policies - Deferred IPO Cost and Deferred Tax Assets Correction (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019
Additional paid-in capital	$ 3,329,386
Deferred tax asset	256,450
Initial Public Offering
Deferred costs	15,900
Follow On Offering
Deferred costs	2,600
Deferred Tax Asset Correction
Additional paid-in capital	10,200	$ 10,200	$ 10,200
Deferred tax asset	$ 10,200	$ 10,200	$ 10,200

X

- Definition

Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.

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- Definition

Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting.

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Specific incremental costs directly attributable to a proposed or actual offering of securities which are deferred at the end of the reporting period.

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