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Summary of Significant Accounting Policies (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Jun. 30, 2016
Fair value of assets measured at fair value on a recurring basis          
Transfers of assets and liabilities between Level 1, Level 2, or Level 3 $ 0 $ 0 $ 0 $ 0  
Standby Letters of Credit          
Standby Letter of Credit          
Standby letter of credit         $ 2,400,000