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Available-for-Sale-Securities Available-for-sale Securities by Contractual Maturity (Details) (USD $)
Jun. 30, 2014
Available-for-sale Securities [Abstract]  
Less than one year, Amortized Cost $ 28,376,300
Less than one year, Fair Value 28,377,300
Amortized Cost 28,376,300
Estimated Fair Value $ 28,377,300