XML 57 R43.htm IDEA: XBRL DOCUMENT v3.4.0.3
Fair Value Measurements and Short-term Investment - Summary of Gross Unrealized Gains and Losses on the Company Short-term Investments (Details)
$ in Thousands
Mar. 31, 2016
USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]  
Amortized Cost $ 112,709
Gross Unrealized Holding Gains 31
Gross Unrealized Holding Losses (1)
Aggregate Fair Value 112,739
U. S. Government bonds  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]  
Amortized Cost 112,709
Gross Unrealized Holding Gains 31
Gross Unrealized Holding Losses (1)
Aggregate Fair Value $ 112,739