Cash, Cash Equivalents and Short Term Investments (Tables)

6 Months Ended

Jun. 30, 2019

Cash And Cash Equivalents [Abstract]

Summary of Estimated Value of Cash, Cash Equivalents and Short Term Investments

The following tables summarize the estimated value of the Company’s cash, cash equivalents and short-term investments (in thousands):

	June 30, 2019
	Amortized Cost		Unrealized Gain		Unrealized Loss		Fair Value
Cash and cash equivalents:
Cash	$	35,479	$	—	$	—	$	35,479
Money market fund		5,835		—		—	$	5,835
Reverse repurchase agreements		12,000		—		—		12,000
Total cash and cash equivalents	$	53,314	$	—	$	—	$	53,314
Short-term investments:
U.S. corporate bonds	$	9,172	$	4		—	$	9,176
International corporate bonds		4,195		1		—	$	4,196
Total short-term investments	$	13,367	$	5	$	—	$	13,372

	December 31, 2018
	Amortized Cost		Unrealized Gain		Unrealized Loss			Fair Value
Cash and cash equivalents:
Cash	$	10,253	$	—	$	—		$	10,253
Money market fund		140		—		—			140
Reverse repurchase agreements		24,000		—		—			24,000
Total cash and cash equivalents	$	34,393	$	—	$	—		$	34,393
Short-term investments:
U.S. corporate bonds	$	21,184	$	—	$	(19	)	$	21,165
International corporate bonds		5,972		—		(6	)		5,966
Total short-term investments	$	27,156	$	—	$	(25	)	$	27,131