Related Party Transactions (Details)	3 Months Ended	9 Months Ended
Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) director	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Related Party Transaction [Line Items]
Other income	$ 3,000	$ 100,000	$ 486,000	$ 595,000
Receivable from stockholders	1,000		1,000		$ 89,000
Due to related party	20,000		20,000		0
Research and development expense	123,000	100,000	$ 335,000	300,000
Number of members under consulting agreements \| director			2
Intellectual property related legal fees
Related Party Transaction [Line Items]
Legal fees	402,000	230,000	$ 1,100,000	844,000
Due to related party	358,000		358,000		104,000
Other legal fees
Related Party Transaction [Line Items]
Legal fees	309,000	$ 205,000	2,300,000	$ 417,000
Due to related party	$ 302,000		$ 302,000		$ 130,000

Represents the number of members under consulting agreements.

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- Definition

Amount of research and development expenses resulting from transactions, excluding transactions that are eliminated in consolidated or combined financial statements, with related party.

+ References

No definition available.

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For an unclassified balance sheet, amounts due from owners or owners with a beneficial interest of more than 10 percent of the voting interests or officers of the company.

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Carrying amount as of the balance sheet date of obligations due all related parties.

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Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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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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Reflects the sum of all other revenue and income realized from sales and other transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party during the period.

+ References

No definition available.

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