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Convertible Debt
 3 Months Ended
Mar. 31, 2024
Debt Disclosure [Abstract]  
Convertible Debt Convertible Debt
Convertible Senior Notes
On February 19, 2019 and March 1, 2019, the Company completed a private placement of $78.5 million aggregate principal amount of its 6.50% convertible senior notes due 2024 (the “Notes”). The Notes were sold in a private offering to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended. Net proceeds from the offering were $75.7 million.
The Notes were senior unsecured obligations of the Company and accrued interest payable in cash semi-annually in arrears on March 1 and September 1 of each year at a rate of 6.50% per annum. The Notes matured on March 1, 2024 and the Company paid the then remaining $16.9 million obligation in full, including accrued interest.
For the three months ended March 31, 2024 and 2023, the Company recognized $178,000 and $313,000, respectively, of interest expense related to the Notes, of which $178,000 and $267,000, respectively, related to the contractual interest coupon.