At-the-Market Offering	6 Months Ended
Jun. 30, 2020
Text Block [Abstract]
At-the-Market Offering	9. At-the-Market Offering On March 27, 2020, the Company entered into an Equity Distribution Agreement (the “Agreement”) with JMP Securities LLC, serving as placement agent (the “Placement Agent”) with respect to an at-the-market offering program under which the Company may offer and sell, from time to time at its sole discretion, shares of its common stock, par value $0.0001 per share (the “Common Stock”), having an aggregate offering price of up to $50.0 million (the “Shares”) through the Placement Agent (the “Offering”). Any Shares offered and sold in the Offering will be issued pursuant to the Company’s Registration Statement on Form S-3 filed with the Securities and Exchange Commission (the “SEC”) on April 4, 2019, which was declared effective on April 12, 2019, the prospectus supplement relating to the Offering filed with the SEC on March 27, 2020 and any applicable additional prospectus supplements related to the Offering that form a part of the Registration Statement. The aggregate market value of Shares eligible for sale in the Offering and under the Equity Distribution Agreement will be subject to the limitations of General Instruction I.B.6 of Form S-3, to the extent required under such instruction. The Company offered Shares having an aggregate offering price of $18.9 million pursuant to the prospectus supplement filed with the SEC on March 27, 2020. On June 1, 2020, the Company filed an amendment to the Agreement which amended the prospectus supplement dated March 27, 2020 to increase the aggregate offering price to $50.0 million. As of June 30, 2020, the Company has sold 2,965,144 shares of Common Stock under the Agreement resulting in $22.8 million in net proceeds, leaving $26.3 million available to be sold under the amended Agreement. As of June 30, 2020, the Company recorded approximately $0.3 million of offering costs which offset the proceeds received from the shares sold through June 30, 2020 and recognized approximately $0.2 million of deferred offering costs which will offset future proceeds received under the Agreement. Subsequent to the quarter ended June 30, 2020, the Company sold 234,856 shares of Common Stock under the Equity Distribution Agreement, that resulted in $2.5 million in net proceeds, leaving $23.7 million available to be sold under the amended Agreement.

At-the-Market Offering

6 Months Ended

Jun. 30, 2020

9. At-the-Market Offering

On March 27, 2020, the Company entered into an Equity Distribution Agreement (the “Agreement”) with JMP Securities LLC, serving as placement agent (the “Placement Agent”) with respect to an at-the-market offering program under which the Company may offer and sell, from time to time at its sole discretion, shares of its common stock, par value $0.0001 per share (the “Common Stock”), having an aggregate offering price of up to $50.0 million (the “Shares”) through the Placement Agent (the “Offering”).

Any Shares offered and sold in the Offering will be issued pursuant to the Company’s Registration Statement on Form S-3 filed with the Securities and Exchange Commission (the “SEC”) on April 4, 2019, which was declared effective on April 12, 2019, the prospectus supplement relating to the Offering filed with the SEC on March 27, 2020 and any applicable additional prospectus supplements related to the Offering that form a part of the Registration Statement. The aggregate market value of Shares eligible for sale in the Offering and under the Equity Distribution Agreement will be subject to the limitations of General Instruction I.B.6 of Form S-3, to the extent required under such instruction. The Company offered Shares having an aggregate offering price of $18.9 million pursuant to the prospectus supplement filed with the SEC on March 27, 2020.

On June 1, 2020, the Company filed an amendment to the Agreement which amended the prospectus supplement dated March 27, 2020 to increase the aggregate offering price to $50.0 million.

As of June 30, 2020, the Company has sold 2,965,144 shares of Common Stock under the Agreement resulting in $22.8 million in net proceeds, leaving $26.3 million available to be sold under the amended Agreement. As of June 30, 2020, the Company recorded approximately $0.3 million of offering costs which offset the proceeds received from the shares sold through June 30, 2020 and recognized approximately $0.2 million of deferred offering costs which will offset future proceeds received under the Agreement.

Subsequent to the quarter ended June 30, 2020, the Company sold 234,856 shares of Common Stock under the Equity Distribution Agreement, that resulted in $2.5 million in net proceeds, leaving $23.7 million available to be sold under the amended Agreement.