Summary of Significant Accounting Policies (Details)		12 Months Ended
Oct. 10, 2017	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Stock split conversion ratio	2.8879
Cash, uninsured amount		$ 199,507,000	$ 233,772,000
Loss on sale of equipment		0	0
Advertising expense		9,767,000	1,833,000
Restricted cash		21,000	21,000
Disaggregation of Revenue [Line Items]
Revenues		7,065,000	$ 0
License
Disaggregation of Revenue [Line Items]
Revenues		$ 70,000

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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