Current report of foreign issuer pursuant to Rules 13a-16 and 15d-16 Amendments

Unaudited Condensed Consolidated Balance Sheets (Parenthetical)

v3.21.2
Unaudited Condensed Consolidated Balance Sheets (Parenthetical) - € / shares
Jun. 30, 2021
Dec. 31, 2020
Statement of Financial Position [Abstract]    
Ordinary share capital, par value (in EUR per share) € 0.01 € 0.01
Ordinary share capital, shares authorized (in shares) 450,000,000 350,000,000
Ordinary share capital, shares issued (in shares) 138,847,345 138,847,345
Ordinary share capital, shares outstanding (in shares) 133,378,888 130,398,538
Unvested restricted stock (in shares) 5,254,512 2,552,346
Treasury stock, at cost, shares (in shares) 5,468,457 8,448,807