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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 consisted of the following:

 

  As of
March 31, 2018
  As of
December 31, 2017
 
Cash and cash equivalents $3,060,470  $3,798,811 

 

Short-term investments were liquidated during 2017 to finance the investment in our Nisin production facility. The cost of securities sold is determined based on the specific identification method. Realized gains and losses, and declines in value judged to be other than temporary, are included in investment income. We are required by bank debt covenant to maintain at least $2,000,000 of otherwise unrestricted cash, cash equivalents and short-term investments.