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Significant Accounting Policies - Net Loss Per Common Share (Details) - shares	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Stock options and restricted stock units
Anti-dilutive securities excluded
Anti-dilutive securities	5,241,838	3,976,362

X

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

+ Details

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Period Type:	duration

X

- References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
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- Details

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