XML 52 R42.htm IDEA: XBRL DOCUMENT v3.19.2
Leases - Schedule of Future Minimum Payments under Facility Operating Lease (Detail)
$ in Thousands
Jun. 30, 2019
USD ($)
Leases, Operating [Abstract]  
2019 $ 110
2020 187
Total future lease payments 297
Less: imputed interest (33)
Present value of lease liabilities $ 264