Commitments and Contingencies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Jan. 01, 2019
Commitment And Contingencies [Line Items]
Lessee, Operating Lease, Term of Contract		38 months
Lease Deposits		$ 6,000
Lease liability	$ 39,000
Discount rate	11.04%
Other assets
Commitment And Contingencies [Line Items]
Right-of-Use Asset	$ 84,000
Accrued And Other Liabilities Current
Commitment And Contingencies [Line Items]
Lease liability	39,000
Other liabilities
Commitment And Contingencies [Line Items]
Non current lease liability	52,000
General and administrative
Commitment And Contingencies [Line Items]
Lease cost	$ 44,000