Investments (Tables)

3 Months Ended

Mar. 31, 2016

Investments Debt And Equity Securities [Abstract]

Schedule of Fair Value of Available-for-Sale Investments by Type of Security

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

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References + Details