Equity	3 Months Ended
Mar. 31, 2020
Equity [Abstract]
Equity	Note 6 — Equity Common Stock On July 30, 2018 we filed a $100,000 universal shelf registration statement on SEC Form S-3 which was declared effective by the SEC on August 16, 2018. We also entered an at-the-market equity offering sales agreement (“ATM”) with Cowen & Company, LLC on August 31, 2018, under which we can offer and sell shares of our common stock having an aggregate value of up to $50,000. We use the ATM proceeds for GABRIEL product development, marketing and general corporate purposes, which may include working capital, capital expenditures, other corporate expenses and acquisitions of complementary products, technologies or businesses. As of March 31, 2020, common stock with an aggregate value of up to $21,964 remained available for offer and sale under the ATM agreement. During the three months ended March 31, 2020, we sold 1,049,382 shares under the ATM. The average sales price per common share was $4.41 and the aggregate proceeds from the sales totaled $4,627 during the period. Sales commissions, fees and other costs associated with the ATM totaled $139. During the three months ended March 31, 2019, we sold 560,338 shares under the ATM. The average sales price per common share was $5.24 and the aggregate proceeds from the sales totaled $2,936 during the period. Sales commissions, fees and other costs associated with the ATM totaled $88. Warrants In 2015 we issued warrants for the purchase of 25,000 shares of common stock at an exercise price of $7 per share, which expired in April 2020.

Note 6 — Equity

Common Stock

On July 30, 2018 we filed a $100,000 universal shelf registration statement on SEC Form S-3 which was declared effective by the SEC on August 16, 2018. We also entered an at-the-market equity offering sales agreement (“ATM”) with Cowen & Company, LLC on August 31, 2018, under which we can offer and sell shares of our common stock having an aggregate value of up to $50,000.

We use the ATM proceeds for GABRIEL product development, marketing and general corporate purposes, which may include working capital, capital expenditures, other corporate expenses and acquisitions of complementary products, technologies or businesses. As of March 31, 2020, common stock with an aggregate value of up to $21,964 remained available for offer and sale under the ATM agreement.

During the three months ended March 31, 2020, we sold 1,049,382 shares under the ATM. The average sales price per common share was $4.41 and the aggregate proceeds from the sales totaled $4,627 during the period. Sales commissions, fees and other costs associated with the ATM totaled $139. During the three months ended March 31, 2019, we sold 560,338 shares under the ATM. The average sales price per common share was $5.24 and the aggregate proceeds from the sales totaled $2,936 during the period. Sales commissions, fees and other costs associated with the ATM totaled $88.

Warrants

In 2015 we issued warrants for the purchase of 25,000 shares of common stock at an exercise price of $7 per share, which expired in April 2020.