Business	12 Months Ended
Dec. 31, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Business	1. Business La Jolla Pharmaceutical Company (collectively with its wholly owned subsidiaries, “La Jolla” or the “Company”) is dedicated to the commercialization of innovative therapies that improve outcomes in patients suffering from life-threatening diseases. GIAPREZA^® (angiotensin II) injection is approved by the U.S. Food and Drug Administration (“FDA”) as a vasoconstrictor indicated to increase blood pressure in adults with septic or other distributive shock. XERAVA^® (eravacycline) for injection is approved by the FDA as a tetracycline class antibacterial indicated for the treatment of complicated intra-abdominal infections (“cIAI”) in patients 18 years of age and older. On July 28, 2020, La Jolla completed its acquisition of Tetraphase Pharmaceuticals, Inc. and its subsidiaries (“Tetraphase”), a biopharmaceutical company focused on commercializing XERAVA, for $43 million in upfront cash plus potential future cash payments of up to $16 million. The Company’s consolidated financial results exclude Tetraphase’s financial results prior to the acquisition closing date of July 28, 2020 (see Note 11). In January 2021, La Jolla and certain of its wholly owned subsidiaries entered into an exclusive license agreement with PAION AG to commercialize GIAPREZA and XERAVA in the European Economic Area, the United Kingdom and Switzerland. Pursuant to the agreement: (i) the Company has received an upfront cash payment of $22.5 million, less a 15% refundable withholding tax; and (ii) the Company is entitled to receive potential commercial milestone payments of up to $109.5 million and royalties on net sales of GIAPREZA and XERAVA. As of December 31, 2021 and 2020, the Company had cash and cash equivalents of $46.7 million and $21.2 million, respectively. Based on the Company’s current operating plans and projections, the Company expects that its existing cash and cash equivalents will be sufficient to fund operations for at least one year from the date this Annual Report on Form 10-K is filed with the U.S. Securities and Exchange Commission (the “SEC”). The Company expects to fund future operations with existing cash or cash generated from operations.

Business

12 Months Ended

Dec. 31, 2021

Organization Consolidation And Presentation Of Financial Statements [Abstract]

1. Business

La Jolla Pharmaceutical Company (collectively with its wholly owned subsidiaries, “La Jolla” or the “Company”) is dedicated to the commercialization of innovative therapies that improve outcomes in patients suffering from life-threatening diseases. GIAPREZA^® (angiotensin II) injection is approved by the U.S. Food and Drug Administration (“FDA”) as a vasoconstrictor indicated to increase blood pressure in adults with septic or other distributive shock. XERAVA^® (eravacycline) for injection is approved by the FDA as a tetracycline class antibacterial indicated for the treatment of complicated intra-abdominal infections (“cIAI”) in patients 18 years of age and older.

On July 28, 2020, La Jolla completed its acquisition of Tetraphase Pharmaceuticals, Inc. and its subsidiaries (“Tetraphase”), a biopharmaceutical company focused on commercializing XERAVA, for $43 million in upfront cash plus potential future cash payments of up to $16 million. The Company’s consolidated financial results exclude Tetraphase’s financial results prior to the acquisition closing date of July 28, 2020 (see Note 11).

In January 2021, La Jolla and certain of its wholly owned subsidiaries entered into an exclusive license agreement with PAION AG to commercialize GIAPREZA and XERAVA in the European Economic Area, the United Kingdom and Switzerland. Pursuant to the agreement: (i) the Company has received an upfront cash payment of $22.5 million, less a 15% refundable withholding tax; and (ii) the Company is entitled to receive potential commercial milestone payments of up to $109.5 million and royalties on net sales of GIAPREZA and XERAVA.

As of December 31, 2021 and 2020, the Company had cash and cash equivalents of $46.7 million and $21.2 million, respectively. Based on the Company’s current operating plans and projections, the Company expects that its existing cash and cash equivalents will be sufficient to fund operations for at least one year from the date this Annual Report on Form 10-K is filed with the U.S. Securities and Exchange Commission (the “SEC”). The Company expects to fund future operations with existing cash or cash generated from operations.