Quarterly report pursuant to Section 13 or 15(d)

Basis of Financial Statement Presentation - Disaggregation of Revenue (Details)

v3.19.2
Basis of Financial Statement Presentation - Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Mar. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Current $ 256 $ 256
Non-current 0 0
Total contract liabilities $ 256 $ 256