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Short-Term Investments	12 Months Ended
Short-Term Investments	Dec. 31, 2019
Short-Term Investments
Short-Term Investments	2.Short-Term Investments The Company had short-term investments at December 31, 2019 and 2018 consisting of certificates of deposit with original maturities greater than three months but less than a year. Certificates of deposits with any given banking institution did not exceed the FDIC insurance limit at December 31, 2019 or 2018.