Investments

Cash, cash equivalents and investments as of September 30, 2016 included the following:



(in thousands)	AMORTIZED COST		GROSS UNREALIZED GAINS		GROSS UNREALIZED LOSSES			FAIR VALUE
Cash and cash equivalents:
Cash and money market accounts	$	206,708	$	—	$	—		$	206,708
Certificates of deposit	480		—		—			480
Commercial paper	1,499		—		—			1,499
Corporate bonds	1,251		—		—			1,251
Government agencies	2,000		—		—			2,000
Total cash and cash equivalents	$	211,938	$	—	$	—		$	211,938
Investments:
Certificates of deposit (due within 1 year)	$	10,280	$	11	$	(1	)	$	10,290
Commercial paper (due within 1 year)	1,500		—		—			1,500
Corporate bonds (due within 1 year)	25,417		1		(26		)	25,392
Corporate bonds (due within 2 years)	1,970		—		—			1,970
Government agencies (due within 1 year)	4,510		2		—			4,512
Total investments	$	43,677	$	14	$	(27	)	$	43,664
Total cash, cash equivalents, and investments	$	255,615	$	14	$	(27	)	$	255,602

Cash, cash equivalents and investments as of December 31, 2015 included the following:



(in thousands)	AMORTIZED COST		GROSS UNREALIZED GAINS		GROSS UNREALIZED LOSSES			FAIR VALUE
Cash and cash equivalents:
Cash and money market accounts	$	91,060	$	—	$	—		$	91,060
Total cash and cash equivalents	$	91,060	$	—	$	—		$	91,060
Investments:
Certificates of deposit (due within 1 year)	$	13,611	$	1	$	(7	)	$	13,605
Certificates of deposit (due within 2 years)	4,760		—		(10		)	4,750
Commercial paper (due within 1 year)	5,977		—		(11		)	5,966
Corporate bonds (due within 1 year)	24,002		—		(65		)	23,937
Corporate bonds (due within 2 years)	9,142		—		(84		)	9,058
Government agencies (due within 1 year)	1,997		—		(3		)	1,994
Total investments	$	59,489	$	1	$	(180	)	$	59,310
Total cash, cash equivalents, and investments	$	150,549	$	1	$	(180	)	$	150,370