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Cash and Cash Equivalents
3 Months Ended
Mar. 31, 2018
Cash and Cash Equivalents [Abstract]  
Cash and Cash Equivalents

3. Cash and Cash Equivalents

Cash and cash equivalents of approximately $70,619 and $24,103 at March 31, 2018 and December 31, 2017, respectively, were held at one financial institution. At March 31, 2018 and December 31, 2017, cash equivalents were approximately $68,041 and $26,548, respectively.