CONSOLIDATED BALANCE SHEETS (Parenthetical) (UNAUDITED) € in Thousands	Mar. 31, 2022 $ / shares	Mar. 31, 2022 EUR (€) shares	Dec. 31, 2021 $ / shares	Dec. 31, 2021 EUR (€) shares
CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)
Property and equipment, accumulated depreciation | €		€ 479		€ 474
Common stock, par value | $ / shares	$ 0.01		$ 0.01
Common stock, shares authorized		1,200,000,000		1,200,000,000
Common stock, shares issued		303,757,622		303,757,622
Common stock, shares outstanding		303,757,622		303,757,622
Preferred stock, par value | $ / shares	$ 0.01		$ 0.01
Preferred stock, shares authorized		5,000,000		5,000,000
Preferred stock, shares issued		0		0
Preferred stock, shares outstanding		0		0