Convertible 4.5% Senior Notes	6 Months Ended
Jun. 30, 2020
Convertible 4.5% Senior Notes
Convertible 4.5% Senior Notes	D.Convertible 4.5% Senior Notes In 2016, the Company issued Convertible Notes with an aggregate principal amount of $100 million, of which $2.1 million remains outstanding as of June 30, 2020. The Convertible Notes are governed by the terms of an indenture between the Company, as issuer, and Wilmington Trust, National Association, as the trustee. The Convertible Notes are senior unsecured obligations and bear interest at a rate of 4.5% per year, payable semi-annually in arrears on January 1 and July 1 of each year, commencing on January 1, 2017. The Company recorded $47,000 of interest expense in each of the six months ended June 30, 2020 and 2019, respectively. The Convertible Notes will mature on July 1, 2021, unless earlier repurchased or converted. Holders may convert their notes at their option at any time prior to the close of business on the business day immediately preceding the stated maturity date. Upon conversion, the Company will deliver for each $1,000 principal amount of converted notes a number of shares equal to the conversion rate, which will initially be 238.7775 shares of common stock, equivalent to an initial conversion price of approximately $4.19. The conversion rate will be subject to adjustment in some circumstances, but will not be adjusted for any accrued and unpaid interest.

Convertible 4.5% Senior Notes

6 Months Ended

Jun. 30, 2020

D.Convertible 4.5% Senior Notes

In 2016, the Company issued Convertible Notes with an aggregate principal amount of $100 million, of which $2.1 million remains outstanding as of June 30, 2020. The Convertible Notes are governed by the terms of an indenture between the Company, as issuer, and Wilmington Trust, National Association, as the trustee. The Convertible Notes are senior unsecured obligations and bear interest at a rate of 4.5% per year, payable semi-annually in arrears on January 1 and July 1 of each year, commencing on January 1, 2017. The Company recorded $47,000 of interest expense in each of the six months ended June 30, 2020 and 2019, respectively. The Convertible Notes will mature on July 1, 2021, unless earlier repurchased or converted. Holders may convert their notes at their option at any time prior to the close of business on the business day immediately preceding the stated maturity date. Upon conversion, the Company will deliver for each $1,000 principal amount of converted notes a number of shares equal to the conversion rate, which will initially be 238.7775 shares of common stock, equivalent to an initial conversion price of approximately $4.19. The conversion rate will be subject to adjustment in some circumstances, but will not be adjusted for any accrued and unpaid interest.