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Subsequent Events	9 Months Ended
Subsequent Events	Sep. 30, 2020
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Underwritten Public Offering On October 2, 2020 the Company completed an underwritten public offering of 6,500,000 shares of its common stock at a price to the public of $13.50 per share. In addition, the underwriters exercised in full an option to purchase an additional 975,000 shares of common stock at the public offering price, less the underwriting discounts and commissions. All of the shares in the offering were sold by the Company, with gross proceeds of approximately $100.9 million, and net proceeds of approximately $94.0 million, after deducting underwriting discounts, commissions and estimated offering expenses. Exercise of Warrants From October 1 through October 31, 2020 the Company received proceeds of approximately $3.4 million from the exercise of 1.6 million warrants. The warrants exercised during the relevant period were from various prior equity offerings. Repayment of Small Business Administration Payroll Protection Program Loan On October 19, 2020 the Company repaid in full the PPP Loan principal of $305,000 and interest for the period the loan was outstanding.