Short Term Investments	12 Months Ended
	Dec. 31, 2019
Investments Schedule [Abstract]
Short Term Investments	SHORT-TERM INVESTMENTSShort-term investments at December 31, 2019 were comprised of U.S. Treasury Bills totaling $24.8 million, consisting of $8.9 million maturing on March 12, 2020 and $15.9 million maturing on June 11, 2020. The interest rates on the U.S. Treasury Bills held on December 31, 2019 and maturing on March 12, 2020 and June 11, 2020 are 1.8%, and 1.4%, respectively. Short-term investments at December 31, 2018 were comprised of U.S. Treasury Bills totaling $24.8 million, consisting of $9.0 million that matured on March 14, 2019, $10.9 million that matured on June 6, 2019 and $4.9 million that matured on June 20, 2019. The interest rates on the U.S. Treasury Bills held on December 31, 2018 that matured on March 14, 2019, June 6, 2019, and June 20, 2019 were 2.2%, 2.4% and 2.3%, respectively. The investments are classified as held-to-maturity and recorded at cost plus accrued interest, which approximates fair value. We do not intend to sell these investments, and it is not more likely than not that we will be required to sell the investments before we recover their amortized cost bases.