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Cash, Cash Equivalents and Investments (Tables)

3 Months Ended

Mar. 31, 2019

Cash, Cash Equivalents and Investments [Abstract]

Summary of Cash, Cash Equivalents and Investments



	As of March 31, 2019
				Gross			Gross
	Amortized			unrealized			unrealized			Fair
	Cost			gains			losses			Value
Cash and cash equivalents:
Cash and money market funds	$	29,329		$	—		$	—		$	29,329
Commercial paper		8,877			—			(1)			8,876
Total cash and cash equivalents		38,206			—			(1)			38,205
Investments:
Commercial paper		31,309			1			(4)			31,306
Corporate debt securities		6,970			10			(1)			6,979
US government & agency securities		6,381			1			—			6,382
Total investments		44,660			12			(5)			44,667
Total cash, cash equivalents and investments	$	82,866		$	12		$	(6)		$	82,872
Long-term restricted cash:
Cash	$	4,500		$	—		$	—		$	4,500


	As of December 31, 2018
				Gross			Gross
	Amortized			unrealized			unrealized			Fair
	Cost			gains			losses			Value
Cash and cash equivalents:
Cash and money market funds	$	18,844		$	—		$	—		$	18,844
Commercial paper		—			—			—			—
Total cash and cash equivalents		18,844			—			—			18,844
Investments:
Commercial paper		53,493			—			(24)			53,469
Corporate debt securities		10,223			3			(12)			10,214
US government & agency securities		19,830			—			(3)			19,827
Total investments		83,546			3			(39)			83,510
Total cash, cash equivalents and investments	$	102,390		$	3		$	(39)		$	102,354
Long-term restricted cash:
Cash	$	4,500		$	—		$	—		$	4,500




Summary of Contractual Maturities of Cash Equivalents and Available-for-Sale Investments



(in thousands)	Fair Value
Due in one year or less	$	53,543
Total investments	$	53,543



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Tabular disclosure of the components of cash, cash equivalents, and investments.

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