Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Nature of Business (Details)

v3.10.0.1

Nature of Business (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 08, 2018	Feb. 28, 2018	Jan. 31, 2018	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Stock Offering
Net loss				$ 14,047	$ 13,368	$ 28,510	$ 24,883	$ 54,000	$ 47,700	$ 29,800
Accumulated deficit				183,776		183,776		155,266
Cash, cash equivalents and marketable securities				$ 124,366		$ 124,366		$ 72,049
Common Stock \| At-the-market sales facility
Stock Offering
Shares issued				1,373,677
Aggregate gross proceeds				$ 16,600
Common Stock \| IPO
Stock Offering
Shares issued		4,188,481
Share price (in dollars per share)		$ 9.55
Aggregate gross proceeds		$ 40,000
Underwriting commissions and fees		$ 3,000
Common Stock \| Over-allotment
Stock Offering
Shares issued		628,272
Share price (in dollars per share)		$ 9.55
Aggregate gross proceeds		$ 6,000
Underwriting commissions and fees		$ 400
Incyte \| Stock Purchase Agreement
Stock Offering
Shares issued	793,021
Share price (in dollars per share)	$ 12.61
Incyte \| Common Stock \| Private Placement
Stock Offering
Shares issued		144,505	793,021
Aggregate gross proceeds		$ 1,400	$ 10,000

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