Investments

12 Months Ended

Dec. 31, 2018

Investments, Debt and Equity Securities [Abstract]

Investments

Investments

Cash and cash equivalents as of December 31, 2018 included the following:

			GROSS		GROSS
	AMORTIZED		UNREALIZED		UNREALIZED		FAIR
(in thousands)	COST		GAINS		LOSSES		VALUE
Cash and cash equivalents:
Cash and money market funds	$	202,818	$	—	$	—	$	202,818
Total cash and cash equivalents	$	202,818	$	—	$	—	$	202,818

Cash, cash equivalents and investments as of December 31, 2017 included the following:

			GROSS		GROSS
	AMORTIZED		UNREALIZED		UNREALIZED			FAIR
(in thousands)	COST		GAINS		LOSSES			VALUE
Cash and cash equivalents:
Cash and money market funds	$	197,569	$	—	$	—		$	197,569
Total cash and cash equivalents	$	197,569	$	—	$	—		$	197,569
Investments:
Commercial paper	$	30,883	$	—	$	—		$	30,883
Corporate bonds	21,231		—		(28		)	21,203
Total investments	$	52,114	$	—	$	(28	)	$	52,086
Total cash, cash equivalents and investments	$	249,683	$	—	$	(28	)	$	249,655