XML 46 R26.htm IDEA: XBRL DOCUMENT v3.4.0.3
Fair Value Measurement (Details) - USD ($)
Mar. 31, 2016
Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Bank deposits $ 609,247 $ 440,809
Money market funds 1,053,184 1,732,449
Cash and cash equivalents 1,662,431 2,173,258
Corporate debt securities   1,401,453
Commercial paper   249,888
Short term investments   1,651,341
Total 1,662,431 3,824,599
Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Bank deposits 609,247 440,809
Money market funds 1,053,184 1,732,449
Cash and cash equivalents 1,662,431 2,173,258
Corporate debt securities   1,401,453
Commercial paper   249,888
Short term investments   1,651,341
Total 1,662,431 3,824,599
Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Bank deposits 0 0
Money market funds 0 0
Cash and cash equivalents 0 0
Corporate debt securities   0
Commercial paper   0
Short term investments   0
Total $ 0 $ 0