Revenue from contract with customer, gross.

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- Definition

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

+ References

No definition available.

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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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- Definition

Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

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Amount of valuation and qualifying accounts and reserves.

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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
	Jan. 01, 2018	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Product Information [Line Items]
Cumulative adjustment to accumulated deficit												$ 1,574
Product sales allowances		$ 27,939				$ 25,503				$ 27,939	$ 25,503
Cost of product sales		$ 15,874	$ 17,195	$ 13,588	$ 14,962	$ 11,572	$ 7,576	$ 5,231	$ 3,133	$ 61,619	$ 27,512	4,588
Accounting Standards Update 2014-09
Product Information [Line Items]
Gross product sales	$ 2,900
Cost of product sales	200
Accounting Standards Update 2014-09 \| Product Sales Allowance
Product Information [Line Items]
Product sales allowances	1,100
Accumulated Earnings
Product Information [Line Items]
Cumulative adjustment to accumulated deficit												$ 1,574
Accumulated Earnings \| Accounting Standards Update 2014-09
Product Information [Line Items]
Cumulative adjustment to accumulated deficit	$ (1,600)
Leasehold Improvements
Product Information [Line Items]
Estimated useful lives										5 years