Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2016

Investments Debt And Equity Securities [Abstract]

Summary of Company Marketable Securities

The following tables present a summary of the Company’s marketable securities, which consist solely of available-for-sale securities (in thousands):

	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
December 31, 2016
Corporate bonds	$	133,424	$	82	$	(298	)	$	133,208
Common equity securities		300		618		—			918
	$	133,724	$	700	$	(298	)	$	134,126

	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
December 31, 2015
Corporate bonds	$	157,977	$	4	$	(759	)	$	157,222
Commercial paper		4,990		—		—			4,990
Common equity securities		3		36		—			39
	$	162,970	$	40	$	(759	)	$	162,251

- 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