Sutro Biopharma, Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Basis of Presentation and Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details)

v3.19.1

Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Restricted cash	$ 15,000	$ 15,000	$ 275,000
Allowance for doubtful accounts receivable	0	0
Accounts receivable, net (including amounts from related parties of $959 and $784 as of December 31, 2018 and 2017, respectively)	2,489,000	1,624,000
Deferred offering costs	$ 0	$ 500,000
Antidilutive securities excluded from computation of net (loss) income per share	3,524,187	5,995,724	5,953,317
Shares of Common Stock subject to Repurchase
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Antidilutive securities excluded from computation of net (loss) income per share	0	9,889	26,353
Research and Development Expense
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Impairment of long-lived assets to be disposed of	$ 0	$ 2,700,000	$ 0
Minimum
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Property and equipment useful lives	3 years
Maximum
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Property and equipment useful lives	5 years

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