Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Schedule of Reconciliation of Undiscounted Cash Flows to Lease Liabilities Recognized (Parenthetical) (Detail)

v3.19.3
Commitments and Contingencies - Schedule of Reconciliation of Undiscounted Cash Flows to Lease Liabilities Recognized (Parenthetical) (Detail)
Sep. 30, 2019
Operating Leases Future Minimum Payments Due [Abstract]  
Weighted average discount rate percent 4.00%