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.

No definition available.

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of lessee's right to use underlying asset under operating lease.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Summary of Significant Accounting Policies - Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2019
Recent Accounting Pronouncements
Revenues	$ 797	$ 461	$ 847	$ 7,551	$ 1,122	$ 1,468	$ 1,051	$ 1,678	$ 9,656	$ 5,319	$ 6,482
ASU 2016-02 \| Restatement Adjustment
Recent Accounting Pronouncements
ROU assets												$ 2,100
Lease liabilities												$ 2,100
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] \| ASU 2014-09 \| Collaboration revenue - Variable consideration
Recent Accounting Pronouncements
Revenues									$ 1,500