Investments

Cash, cash equivalents and investments as of September 30, 2017 included the following:



(in thousands)	AMORTIZED COST		GROSS UNREALIZED GAINS		GROSS UNREALIZED LOSSES			FAIR VALUE
Cash and cash equivalents:
Cash and money market funds	$	194,078	$	—	$	—		$	194,078
Total cash and cash equivalents	$	194,078	$	—	$	—		$	194,078
Investments:
Commercial paper (due within 1 year)	$	43,225	$	—	$	—		$	43,225
Corporate bonds (due within 1 year)	44,125		—		(94		)	44,031
Corporate bonds (due within 2 years)	905		—		(4		)	901
Total investments	$	88,255	$	—	$	(98	)	$	88,157
Total cash, cash equivalents and investments	$	282,333	$	—	$	(98	)	$	282,235

Cash, cash equivalents and investments as of December 31, 2016 included the following:



(in thousands)	AMORTIZED COST		GROSS UNREALIZED GAINS		GROSS UNREALIZED LOSSES			FAIR VALUE
Cash and cash equivalents:
Cash and money market funds	$	196,445	$	—	$	—		$	196,445
Commercial paper	1,500		—		—			1,500
Total cash and cash equivalents	$	197,945	$	—	$	—		$	197,945
Investments:
Certificates of deposit (due within 1 year)	$	6,920	$	4	$	(1	)	$	6,923
Corporate bonds (due within 1 year)	27,615		4		(75		)	27,544
Government agencies (due within 1 year)	1,250		—		—			1,250
Total investments	$	35,785	$	8	$	(76	)	$	35,717
Total cash, cash equivalents and investments	$	233,730	$	8	$	(76	)	$	233,662