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Cash, Cash Equivalents, Short-Term Investments and Long-Term Investments (Details 1)
Jun. 30, 2016
USD ($)
Schedule of held to maturity securities  
Certificates of deposit, Cost $ 7,183,000
Certificates of deposit, Gross Unrealized Gains 5,661
Certificates of deposit, Gross Unrealized Losses 0
Certificates of deposit, Estimated Fair Value $ 7,188,661