Other Financial Information (Q3) (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2018

Dec. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Accrued Expenses

Accrued expenses are comprised of the following (in thousands):

	September 30, 2018		December 31, 2017
Professional fees	$	672	$	575
Outside research and development services	2		61
Other	92		14
	$	766	$	650

Accrued expenses are comprised of the following (in thousands):

	December 31,
	2017		2016
Professional fees	$	575	$	880
Outside research and development services	61		142
Deferred compensation	—		134
Other	14		177
Accrued expenses, net	$	650	$	1,333