Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table summarizes the financial instruments measured at fair value on a recurring basis classified in the fair value hierarchy (Level 1, 2 or 3) based on the inputs used for valuation in the accompanying consolidated balance sheets:

	As of December 31, 2016						As of December 31, 2015
Fair Value Measurements:	Level 1		Level 2		Level 3		Level 1		Level 2		Level 3
Marketable securities (see Note 4)
Equity securities	$	4,033	$	—	$	—	$	3,525	$	—	$	—
Time deposits	—		—		—		—		13,641		—
Corporate bonds	—		57,348		—		—		42,139		—
Government securities - U.S.	—		42,814		—		—		13,738		—
Government securities - Non-U.S.	—		233		—		—		1,063		—
Other fixed-income securities	—		10,471		—		—		3,992		—
Other securities	—		81		—		—		1,640		—
Total assets	$	4,033	$	110,947	$	—	$	3,525	$	76,213	$	—
Related party payable (see Note 10)	—		—		169,347		—		—		122,693
Total liabilities	$	—	$	—	$	169,347	$	—	$	—	$	122,693