Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2020

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on Recurring Basis

Assets measured at fair value on a recurring basis as of March 31, 2020 and December 31, 2019 are summarized below (in thousands):

	March 31, 2020						December 31, 2019
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Direct or Indirect Observable Inputs (Level 2)		Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Direct or Indirect Observable Inputs (Level 2)		Total
Assets
Cash equivalents:
Money market funds	$	3,607	$	—	$	3,607	$	1,871	$	—	$	1,871
Corporate commercial paper		—		1,748		1,748		—		999		999
Corporate debt		—		500		500		—		750		750
Total cash equivalents		3,607		2,248		5,855		1,871		1,749		3,620
Restricted cash:
Money market funds		600		—		600		600		—		600
Short-term investments:
Corporate commercial paper		—		—		—		—		748		748
Corporate debt		—		—		—		—		1,501		1,501
Total short-term investments		—		—		—		—		2,249		2,249
Total assets measured at fair value	$	4,207	$	2,248	$	6,455	$	2,471	$	3,998	$	6,469