Fair Value Measurement (Tables)

12 Months Ended

Dec. 31, 2016

Fair Value Assets Measured on Recurring Basis

The following tables set forth the Company's financial assets measured at fair value on a recurring basis as of December 31, 2016 and December 31, 2015, based on the three-tier fair value hierarchy:

As of December 31, 2016	Level 1		Level 2		Total
Bank deposits	$	1,352,541	$	—	$	1,352,541
Money market funds		53,285		—		53,285
Cash and cash equivalents		1,405,826		—		1,405,826
Total	$	1,405,826	$	—	$	1,405,826

As of December 31, 2015	Level 1		Level 2		Total
Bank deposits	$	440,809	$	—	$	440,809
Money market funds		1,732,449		—		1,732,449
Cash and cash equivalents		2,173,258		—		2,173,258
Corporate debt securities		1,401,453		—		1,401,453
Commercial paper		249,888		—		249,888
Short term investments		1,651,341		—		1,651,341
Total	$	3,824,599	$	—	$	3,824,599