Cash, Cash Equivalents and Short-Term Investments

6 Months Ended

Jun. 30, 2017

Cash and Cash Equivalents [Abstract]

Cash, Cash Equivalents and Short-Term Investments

2. Cash, Cash Equivalents and Short-Term Investments

Cash, cash equivalents and short-term investments consisted of the following (in thousands):

	June 30, 2017
	Amortized Cost		Unrealized Gain		Unrealized (Loss)		Estimated Fair Value
Cash	$	304	$	—	$	—	$	304
Money market funds		4,700		—		—		4,700
Total cash and cash equivalents	$	5,004	$	—	$	—	$	5,004

	December 31, 2016
	Amortized Cost		Unrealized Gain		Unrealized (Loss)		Estimated Fair Value
Cash	$	671	$	—	$	—	$	671
Money market funds		2,864		—		—		2,864
U.S. government treasury bills		3,008		—		—		3,008
Corporate bonds and commercial paper		5,504		—		—		5,504
	$	12,047	$	—	$	—	$	12,047

Reported as:
Cash and cash equivalents	$	3,535
Short-term investments		8,512
Total cash, cash equivalents and short-term investments	$	12,047