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Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2019

Accounting Policies [Abstract]

Summary of Assets Measured at Fair Value on Recurring Basis

The following table summarizes assets measured at fair value on a recurring basis at September 30, 2019 (in thousands):

						Active				Observable				Unobservable
		September 30,				Markets				Inputs				Inputs
Description		2019				(Level 1)				(Level 2)				(Level 3)
Cash		$	8			$	8			$	—			$	—
Money market funds (included in    cash and cash equivalents)			23,613				23,613				—				—
U.S. treasury securities (included in    marketable securities)			93,641				93,641				—				—
Total		$	117,262			$	117,262			$	—			$	—

The following table summarizes assets measured at fair value on a recurring basis at December 31, 2018 (in thousands):

						Active				Observable				Unobservable
		December 31,				Markets				Inputs				Inputs
Description		2018				(Level 1)				(Level 2)				(Level 3)
Money market funds (included in    cash and cash equivalents)		$	6,804			$	6,804			$	—			$	—
U.S. treasury securities (included in    cash and cash equivalents)			238				238				—				—
U.S. treasury securities (included in    marketable securities)			100,986				100,986				—				—
Total		$	108,028			$	108,028			$	—			$	—

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- References

No definition available.

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- Definition

Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19279-110258

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2C
-URI http://asc.fasb.org/extlink&oid=117815213&loc=SL7498348-110258

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
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-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bb)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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