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Fair Value Measurements (Tables)
 9 Months Ended
Sep. 30, 2021
Fair Value Disclosures [Abstract]  
Fair Value, by Balance Sheet Grouping
The following table summarizes our cash equivalents and marketable securities measured at fair value. Certain marketable securities consist of investments in debt and equity securities. Debt securities are classified as trading securities. We classify our cash equivalents and marketable securities within Level 1 because we use quoted market prices models utilizing market observable inputs to determine their fair value.

September 30, 2021
Cash and cash equivalents:
Cash $5,682,780 
Money Market Funds6,019,684 
Total cash and cash equivalents11,702,464 
Marketable securities
Debt securities2,020,563 
Equity securities905,222 
Total marketable securities2,925,785 
Total cash and cash equivalents and marketable securities$14,628,249