Quarterly report pursuant to Section 13 or 15(d)

Organization and Description of the Business - Additional Information (Details)

v3.19.1
Organization and Description of the Business - Additional Information (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2019
USD ($)
Segment
Dec. 31, 2018
USD ($)
Organization And Description Of Business [Line Items]    
Number of operating segments | Segment 1  
Accumulated deficit | $ $ 56,837 $ 49,195
Minimum    
Organization And Description Of Business [Line Items]    
Sufficient cash and cash equivalents available period term 12 months