Transactions With Related Parties	12 Months Ended
Dec. 31, 2019
Transactions With Related Parties [Abstract]
Transactions With Related Parties	17. Transactions with Related Parties A member of our Board of Directors and a shareholder of the Company, who retired from the Board of Directors during 2018, was the former Chief of Thoracic Surgery of a university hospital that generated product and preservation services revenues of $499,000, $443,000, and $133,000 for us in 2019, 2018, and 2017, respectively. Additionally, the son of this former member of our Board of Directors received a retainer for performing heart and lung transplants from a medical center that generated product and preservation services revenues of $1.1 million, $745,000, and $793,000 for us in 2019, 2018, and 2017, respectively. A member of our Board of Directors and a shareholder of the Company, who joined our Board of Directors during 2018, is the CEO of a hospital that generated product and preservation services revenues of $341,000 and $296,000 in 2019 and 2018, respectively.

Transactions With Related Parties

12 Months Ended

Dec. 31, 2019

Transactions With Related Parties [Abstract]

17. Transactions with Related Parties

A member of our Board of Directors and a shareholder of the Company, who retired from the Board of Directors during 2018, was the former Chief of Thoracic Surgery of a university hospital that generated product and preservation services revenues of $499,000, $443,000, and $133,000 for us in 2019, 2018, and 2017, respectively. Additionally, the son of this former member of our Board of Directors received a retainer for performing heart and lung transplants from a medical center that generated product and preservation services revenues of $1.1 million, $745,000, and $793,000 for us in 2019, 2018, and 2017, respectively.

A member of our Board of Directors and a shareholder of the Company, who joined our Board of Directors during 2018, is the CEO of a hospital that generated product and preservation services revenues of $341,000 and $296,000 in 2019 and 2018, respectively.