Fair Value Measurements - Fair Value of Company's Financial Assets and Liabilities Remeasured on a Recurring Basis (Details) - Fair value measurements recurring basis - Money market funds - USD ($) $ in Thousands		Mar. 31, 2016	Dec. 31, 2015
Financial Assets:
Total financial assets	[1]	$ 88,648	$ 90,524
Level 1
Financial Assets:
Total financial assets	[1]	$ 88,648	$ 90,524

[1] The Company held certain assets that are required to be measured at fair value on a recurring basis, included in cash equivalents, which are held in money market funds. All such assets as of March 31, 2016 and December 31, 2015 were recorded based on Level 1 inputs.