Description of Business and Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2020

Accounting Policies [Abstract]

Summary of Cash and Cash Equivalents, Measured at Fair Value on a Recurring Basis

The following table summarizes, by major security type, our cash, cash equivalents and short-term investments that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy (in thousands):

	March 31, 2020				December 31, 2019
	Cost or Amortized Cost		Total Estimated Fair Value		Total Estimated Fair Value
Cash	$	343	$	343	$	188
Level 1 securities:
Money market funds	80,806		80,806		28,957
Level 2 securities:
U.S. government and agency securities	—		—		2,522
Corporate debt securities	—		—		1,999
Total cash, cash equivalents and short-term investments	$	81,149	$	81,149	$	33,666