v3.19.2
Summary of significant accounting policies - Minimum lease payments under ASU 840 (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2018
USD ($)
Lease operating expenses  
2019 $ 86
2020 79
Total 165
Lease base rent expenses  
2019 130
2020 85
Total 215
Total lease commitment  
2019 216
2020 164
Total 380
Rental expense under operating leases $ 232
Ville Saint-Laurent, Quebec  
Operating leases  
Additional term (in years) 3 years