Quarterly report pursuant to Section 13 or 15(d)

Property, Plant and Equipment - Additional Information (Details)

v3.19.3
Property, Plant and Equipment - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Property Plant And Equipment [Abstract]        
Depreciation expense $ 123 $ 161 $ 369 $ 273