Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2016

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-sale Securities

The following tables show the Company’s available-for-sale securities’ adjusted cost, gross unrealized gains, gross unrealized losses and fair value by significant investment category as of December 31, 2016 and 2015, respectively:

	2016
Marketable Securities:	Adjusted Cost		Unrealized Gains		Unrealized Losses			Fair Value
Equity securities	$	3,689	$	409	$	(65	)	$	4,033
Corporate bonds	57,871		89		(612		)	57,348
Government securities - U.S.	43,049		515		(750		)	42,814
Government securities - Non-U.S.	247		—		(14		)	233
Other fixed-income securities	10,281		221		(31		)	10,471
Other securities	81		—		—			81
Total	$	115,218	$	1,234	$	(1,472	)	$	114,980

	2015
Marketable Securities:	Adjusted Cost		Unrealized Gains		Unrealized Losses			Fair Value
Equity securities	$	3,510	$	29	$	(14	)	$	3,525
Time deposits	13,641		—		—			13,641
Corporate bonds	42,129		1,520		(1,510		)	42,139
Government securities - U.S.	13,822		4		(88		)	13,738
Government securities - Non-U.S.	1,112		8		(57		)	1,063
Other fixed-income securities	4,008		—		(16		)	3,992
Other securities	1,663		—		(23		)	1,640
Total	$	79,885	$	1,561	$	(1,708	)	$	79,738

Investments Classified by Contractual Maturity Date

The following table summarizes the estimated fair value of our investments in marketable debt securities, accounted for as available-for-sale securities and classified by the contractual maturity date of the securities as of December 31, 2016:

	Maturities
Marketable Securities:	Less than 1 Year		1-5 Years		5-10 Years		Greater than 10 Years		Total
Equity securities	$	4,033	$	—	$	—	$	—	$	4,033
Corporate bonds	11,933		39,325		5,655		435		57,348
Government securities - U.S.	2,258		33,270		1,530		5,756		42,814
Government securities - Non-U.S.	—		—		233		—		233
Other fixed-income securities	—		8,199		1,996		276		10,471
Other securities	81		—		—		—		81
Total	$	18,305	$	80,794	$	9,414	$	6,467	$	114,980