Stockholders' Equity	9 Months Ended
Mar. 31, 2020
Equity [Abstract]
Stockholders' Equity	(4) Stockholders’ Equity From November 9, 2018 through March 25, 2020, the Company sold 793,668 shares of common stock pursuant to an At-the-Market Issuance Sales Agreement (“ATM Agreement”) with B. Riley FBR, under which B. Riley FBR acted as the sales agent. In connection with the sale of these shares of common stock, the Company received net proceeds of $2.3 million. The weighted-average sale price per share was $3.04. No additional shares of the Company’s common stock will be sold pursuant to the ATM Agreement. The Company did not incur any termination penalties as a result of its termination of the ATM Agreement. On March 25, 2020, the Company entered into a securities purchase agreement with certain purchasers named therein, pursuant to which the Company agreed to issue and sell, in a registered direct offering (the “Registered Offering No. 1”), 354,000 shares of the Company’s common stock, par value $0.001 per share (the “Common Stock”), at an offering price of $5.00 per share. Registered Offering No. 1 resulted in gross proceeds of approximately $1.77 million before deducting the placement agent’s fees and related offering expenses. The shares from Registered Offering No. 1 were offered by the Company pursuant to a prospectus supplement to the Company’s effective shelf registration statement on Form S-3 (Registration No. 333-226060), which was initially filed with the SEC on July 3, 2018, and was declared effective on August 20, 2018. Registered Offering No. 1 closed on March 26, 2020, subject to the satisfaction of customary closing conditions. In connection with Registered Offering No. 1, the Company also issued to the placement agent, or its designees, warrants (the “Warrants No. 1”) to purchase up to 24,780 shares of Common Stock, which represents 7.0% of the shares sold in Registered Offering No. 1. The Warrants No. 1 have an exercise price of $6.25 per share, which represents 125% of the per share offering price of the shares and a termination date of March 25, 2025. On March 27, 2020, the Company entered into a second securities purchase agreement with certain purchasers named therein, pursuant to which the Company agreed to issue and sell, in a registered direct offering (the “Registered Offering No. 2”), 873,335 shares of the Company’s Common Stock, at an offering price of $3.75 per share. Registered Offering No. 2 resulted in gross proceeds of approximately $3.275 million before deducting the placement agent’s fees and related offering expenses. The shares from Registered Offering No. 2 were offered by the Company pursuant to a prospectus supplement to the Company’s effective shelf registration statement on Form S-3 (Registration No. 333-226060), which was initially filed with the SEC on July 3, 2018, and was declared effective on August 20, 2018. Registered Offering No. 2 closed on March 30, 2020, subject to the satisfaction of customary closing conditions. In connection with Registered Offering No. 2, the Company also issued to the placement agent, or its designees, warrants (the “Warrants No. 2” and collective with the Warrants No.1, the “Placement Agent Warrants”) to purchase up to 61,133 shares of Common Stock, which represents 7.0% of the Shares sold in Registered Offering No. 2. The Warrants No. 2 have an exercise price of $4.6875 per share, which represents 125% of the per share offering price of the shares and a termination date of March 27, 2025.

Stockholders' Equity

9 Months Ended

Mar. 31, 2020

(4) Stockholders’ Equity

From November 9, 2018 through March 25, 2020, the Company sold 793,668 shares of common stock pursuant to an At-the-Market Issuance Sales Agreement (“ATM Agreement”) with B. Riley FBR, under which B. Riley FBR acted as the sales agent. In connection with the sale of these shares of common stock, the Company received net proceeds of $2.3 million. The weighted-average sale price per share was $3.04. No additional shares of the Company’s common stock will be sold pursuant to the ATM Agreement. The Company did not incur any termination penalties as a result of its termination of the ATM Agreement.

On March 25, 2020, the Company entered into a securities purchase agreement with certain purchasers named therein, pursuant to which the Company agreed to issue and sell, in a registered direct offering (the “Registered Offering No. 1”), 354,000 shares of the Company’s common stock, par value $0.001 per share (the “Common Stock”), at an offering price of $5.00 per share. Registered Offering No. 1 resulted in gross proceeds of approximately $1.77 million before deducting the placement agent’s fees and related offering expenses. The shares from Registered Offering No. 1 were offered by the Company pursuant to a prospectus supplement to the Company’s effective shelf registration statement on Form S-3 (Registration No. 333-226060), which was initially filed with the SEC on July 3, 2018, and was declared effective on August 20, 2018. Registered Offering No. 1 closed on March 26, 2020, subject to the satisfaction of customary closing conditions. In connection with Registered Offering No. 1, the Company also issued to the placement agent, or its designees, warrants (the “Warrants No. 1”) to purchase up to 24,780 shares of Common Stock, which represents 7.0% of the shares sold in Registered Offering No. 1. The Warrants No. 1 have an exercise price of $6.25 per share, which represents 125% of the per share offering price of the shares and a termination date of March 25, 2025.

On March 27, 2020, the Company entered into a second securities purchase agreement with certain purchasers named therein, pursuant to which the Company agreed to issue and sell, in a registered direct offering (the “Registered Offering No. 2”), 873,335 shares of the Company’s Common Stock, at an offering price of $3.75 per share. Registered Offering No. 2 resulted in gross proceeds of approximately $3.275 million before deducting the placement agent’s fees and related offering expenses. The shares from Registered Offering No. 2 were offered by the Company pursuant to a prospectus supplement to the Company’s effective shelf registration statement on Form S-3 (Registration No. 333-226060), which was initially filed with the SEC on July 3, 2018, and was declared effective on August 20, 2018. Registered Offering No. 2 closed on March 30, 2020, subject to the satisfaction of customary closing conditions. In connection with Registered Offering No. 2, the Company also issued to the placement agent, or its designees, warrants (the “Warrants No. 2” and collective with the Warrants No.1, the “Placement Agent Warrants”) to purchase up to 61,133 shares of Common Stock, which represents 7.0% of the Shares sold in Registered Offering No. 2. The Warrants No. 2 have an exercise price of $4.6875 per share, which represents 125% of the per share offering price of the shares and a termination date of March 27, 2025.