Preferred Stock	9 Months Ended
Sep. 30, 2021
Equity [Abstract]
Preferred Stock	9. Preferred Stock *Series H Preferred Stock* On August 17, 2021, 50 shares of Series H convertible preferred stock (the “Series H Preferred Stock”) were converted into 151,515 shares of the Company’s common stock. *Series L Preferred Stock* On May 4, 2021, a special committee of the Board declared a dividend of one preferred stock purchase right to be paid to the stockholders of record at the close of business on May 14, 2021 for (i) each outstanding share of the Company’s common stock and (ii) each share of the Company’s common stock issuable upon conversion of each share of the Company’s Series H Preferred Stock. Each preferred stock purchase right entitles the registered holder to purchase, subject to a rights agreement, from the Company one one-thousandth of a share of the Company’s newly created Series L Junior Participating Preferred Stock, par value $0.01 per share (the “Series L Preferred Stock”), at a price of $4.00, subject to certain adjustments. The Series L Preferred Stock will be entitled, when, as and if declared, to a preferential per share quarterly dividend payment equal to the greater of (i) $1.00 per share or (ii) 1,000 times the aggregate per share amount of all cash dividends, and 1,000 times the aggregate per share amount (payable in kind) of all noncash dividends or other distributions paid to the holders of the Company’s common stock. The Series L Preferred Stock will be entitled to 1,000 votes on all matters submitted to a vote of the stockholders of the Company. In the event of any merger, consolidation or other transaction in which shares of the Company’s common stock are converted or exchanged, the Series L Preferred Stock will be entitled to receive 1,000 times the amount received per one share of the Company’s common stock.

Preferred Stock

9 Months Ended

Sep. 30, 2021

9. Preferred Stock

Series H Preferred Stock

On August 17, 2021, 50 shares of Series H convertible preferred stock (the “Series H Preferred Stock”) were converted into 151,515 shares of the Company’s common stock.

Series L Preferred Stock

On May 4, 2021, a special committee of the Board declared a dividend of one preferred stock purchase right to be paid to the stockholders of record at the close of business on May 14, 2021 for (i) each outstanding share of the Company’s common stock and (ii) each share of the Company’s common stock issuable upon conversion of each share of the Company’s Series H Preferred Stock. Each preferred stock purchase right entitles the registered holder to purchase, subject to a rights agreement, from the Company one one-thousandth of a share of the Company’s newly created Series L Junior Participating Preferred Stock, par value $0.01 per share (the “Series L Preferred Stock”), at a price of $4.00, subject to certain adjustments. The Series L Preferred Stock will be entitled, when, as and if declared, to a preferential per share quarterly dividend payment equal to the greater of (i) $1.00 per share or (ii) 1,000 times the aggregate per share amount of all cash dividends, and 1,000 times the aggregate per share amount (payable in kind) of all noncash dividends or other distributions paid to the holders of the Company’s common stock. The Series L Preferred Stock will be entitled to 1,000 votes on all matters submitted to a vote of the stockholders of the Company. In the event of any merger, consolidation or other transaction in which shares of the Company’s common stock are converted or exchanged, the Series L Preferred Stock will be entitled to receive 1,000 times the amount received per one share of the Company’s common stock.