CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS

As of December 31, 2014, the Company's cash equivalents include money market funds. The Company had no short-term investments as of December 31, 2014. As of December 31, 2015, cash equivalents and short-term investments consist of:



	Amortized		Gross Unrealized			Estimated
	Cost		Gain (Loss)			Fair Value
	(in thousands)
Classified as current assets:
Cash equivalents:
Money market funds	33,436		—			33,436
Total cash equivalents	33,436		—			33,436
Short-term investments:
U.S. treasuries	15,988		(21		)	15,967
Corporate securities	23,679		(40		)	23,639
Commercial paper	6,987		—			6,987
Total short-term investments	46,654		(61		)	46,593
Total cash equivalents and short-term investments	$	80,090	$	(61	)	$	80,029

Unrealized losses related to these investments are due to interest rate fluctuations as opposed to credit quality. In addition, we do not intend to sell, and it is not more likely than not that we would be required to sell, these investments before recovery of their cost basis. As a result, there is no other-than-temporary impairment for these investments as of December 31, 2015.

The following table summarizes the contractual maturities of investments:



	As of December 31, 2015
	Amortized Cost		Fair Value
	(in thousands)
Contractual maturity
Due within one year	$	46,654	$	46,593
Total	46,654		46,593