Selected Balance Sheet Information (Tables)

9 Months Ended

Sep. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Other Current Assets [Table Text Block]

Prepaid expenses and other current assets (in thousands)

	September 30,		December 31,
	2017		2016
Clinical consulting services refund receivable	$	612	$	-
Prepaid conferences, travel and other expenses		406		295
Grant receivable		130		185
Prepaid insurances		69		358
Prepaid clinical research organizations		46		1,677
Total	$	1,263	$	2,515

Property, Plant and Equipment [Table Text Block]

Property and equipment, net (in thousands)

	September 30,		December 31
	2017		2016
Computer and office equipment	$	661	$	641
Leasehold improvements		439		439
Construction in progress		190		-
Software		11		11
		1,301		1,091
Less accumulated depreciation and amortization		(358)		(186)
Total	$	943	$	905

Accrued Expenses [Table Text Block]

Accrued expenses (in thousands)

	September 30,		December 31,
	2017		2016
Accrued manufacturing costs	$	1,069	$	14
Accrued clinical consulting services		806		2,211
Accrued vendor payments		187		400
Other accrued expenses		8		2
Total	$	2,070	$	2,627

Accrued Employee Benefits [Table Text Block]

Accrued employee benefits (in thousands)

	September 30,		December 31,
	2017		2016
Accrued bonus expense	$	1,265	$	-
Accrued vacation expense		341		261
Other accrued employee benefits		-		52
Total	$	1,606	$	313