Debt - OCEANE Convertible Bonds (Details) € in Millions			3 Months Ended		6 Months Ended
	May 31, 2018 USD ($) ConvertibleBond	May 31, 2018 EUR (€) ConvertibleBond	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)
Debt Instrument [Line Items]
OCEANEs remained outstanding			$ 457,548,000		$ 457,548,000
OCEANE Convertible Bonds | EOS Imaging S.A.
Debt Instrument [Line Items]
Number of OCEANE convertible bonds issued | ConvertibleBond	4,344,651	4,344,651
Aggregate gross proceeds	$ 34,300,000	€ 29.5
Interest rate	6.00%	6.00%
Payment terms					The OCEANEs are unsecured obligations of EOS, rank equally with all other unsecured and unsubordinated obligations of EOS, and pay interest at a rate equal to 6% per year, payable semiannually in arrears on May 31 and November 30 of each year, beginning November 30, 2018
Debt instrument, frequency of periodic payment	semiannually	semiannually
Debt instrument, Date of first payment	Nov. 30, 2018	Nov. 30, 2018
Debt instrument, maturity date	May 31, 2023	May 31, 2023
Interest expense			100,000	$ 200,000	$ 300,000	$ 400,000
OCEANEs remained outstanding			$ 0		$ 0