Stockholders' Equity - Fair Value of Employee Stock Purchase Plan (Parenthetical) (Detail)	Mar. 31, 2020 Participant
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Participants enrolled into the employee stock purchase plan	0
2016 Employee Stock Purchase Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Participants enrolled into the employee stock purchase plan	0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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