1001 - Document - Document And Entity Information
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1002 - Statement - Condensed Balance Sheets (Unaudited)
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1003 - Statement - Condensed Balance Sheets (Unaudited) (Parenthetical)
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1004 - Statement - Condensed Statements of Operations (Unaudited)
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1005 - Statement - Condensed Statement of Stockholders' Equity (Unaudited)
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1006 - Statement - Condensed Statements of Cash Flows (Unaudited)
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1007 - Disclosure - Organization and Operations
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1008 - Disclosure - Summary of Significant Accounting Policies:
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1009 - Disclosure - Share-based Compensation Plans
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1010 - Disclosure - Investments
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1011 - Disclosure - Fair Value of Financial Instruments and Investments
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1012 - Disclosure - Collaboration Agreement
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1013 - Disclosure - Summary of Significant Accounting Policies: (Policies)
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1014 - Disclosure - Share-based Compensation Plans (Tables)
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1015 - Disclosure - Investments (Tables)
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1016 - Disclosure - Fair Value of Financial Instruments and Investments (Tables)
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1017 - Disclosure - Collaboration Agreement (Tables)
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1018 - Disclosure - Organization and Operations - Additional Information (Detail)
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1019 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail)
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1020 - Disclosure - Share-based Compensation Plans - Additional Information (Detail)
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1021 - Disclosure - Share-based Compensation Plans - Summary of Stock Option Activity (Detail)
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1022 - Disclosure - Share-based Compensation Plans - Stock Option Pricing Model Assumption (Detail)
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1023 - Disclosure - Investments - Summary of Company's Investments (Detail)
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1024 - Disclosure - Investments - Summary of Company's Debt Securities Held-to-Maturity (Detail)
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1025 - Disclosure - Investments - Summary of Amortized Cost and Fair Value of Held-to-Maturity Debt Securities (Detail)
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1026 - Disclosure - Fair Value of Financial Instruments and Investments - Schedule of Major Category of Company's Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail)
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1027 - Disclosure - Collaboration Agreements - Additional Information (Detail)
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1028 - Disclosure - Collaboration Agreement - Summary of Performance Obligations and Transaction Price (Detail)
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1029 - Disclosure - Collaboration Agreement - Components of Collaboration Revenue (Detail)
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1030 - Disclosure - Collaboration Agreements - Summary of Changes in Contract Assets and Liabilities (Detail)
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