Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Summary of Estimated Fair Value of Company's Investments in Marketable Securities Classified by Contractual Maturity Date (Details)

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Summary of Significant Accounting Policies - Summary of Estimated Fair Value of Company's Investments in Marketable Securities Classified by Contractual Maturity Date (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Available For Sale Securities [Abstract]    
Due within one year $ 11,057  
Total $ 11,057 $ 43,715