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Commitments and Contingencies - Schedule of Future Minimum Lease Payments for Operating Leases (Detail) $ in Thousands	Sep. 30, 2019 USD ($)
Leases [Abstract]
2019 (October - December)	$ 193
2020	1,090
2021	1,120
2022	1,143
2023	1,165
Thereafter	6,585
Total lease payments	11,296
Less: imputed interest	(4,385)
Present value of lease liabilities	$ 6,911

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Amount of lessee's undiscounted obligation for lease payments for operating lease.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
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Amount of lessee's undiscounted obligation for lease payments for operating lease having an initial or remaining lease term in excess of one year due in remainder of fiscal year following latest fiscal year.

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