3.	Investments

As of March 31, 2016, the fair value of available-for-sale investments by type of security was as follows:

	March 31, 2016
	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss		Fair Value
Investments:
Commercial Paper	$	55,928	$	92		—	$	56,020
Corporate Bonds		26,964		8		—		26,972
Government Securities		15,037		7		—		15,044
Treasury Bonds		12,012		2		—		12,014
	$	109,941	$	109	$	—	$	110,050

	December 31, 2015
	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value
Investments:
Commercial Paper	$	64,733	$	87		—		$	64,820
Corporate Bonds		46,538		—		(48	)		46,490
Government Securities		15,823		—		(4	)		15,819
Treasury Bonds		4,022		—		(2	)		4,020
	$	131,116	$	87	$	(54	)	$	131,149

Investments with original maturities of less than 90 days are included in cash and cash equivalents on the consolidated balance sheets and are not included in the table above.

As of March 31, 2016 and December 31, 2015, the Company’s commercial paper, corporate bonds, government securities and treasury bonds had remaining maturities of less than 12 months.