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Earnings per share (Tables)

12 Months Ended

Dec. 31, 2021

Earnings Per Share [Abstract]

Schedule of computations of basic and diluted earnings per share

The computations of basic and diluted EPS for the years ended December 31, 2021, 2020 and 2019 were as follows:


			Year Ended December 31,
			2021						2020						2019
Net income (loss) for the computation of basic EPS			$	1,000,507					$	(298,566)					$	1,145,694
Weighted average ordinary shares outstanding—basic			146,421,188						127,743,828						134,570,169
Basic EPS			$	6.83					$	(2.34)					$	8.51


			Year Ended December 31,
			2021						2020						2019
Net income (loss) for the computation of diluted EPS			$	1,000,507					$	(298,566)					$	1,145,694
Weighted average ordinary shares outstanding—diluted			149,005,981						127,743,828						135,898,139
Diluted EPS			$	6.71					$	(2.34)					$	8.43

Schedule of computation of ordinary shares outstanding, excluding unvested restricted stock

The computations of ordinary shares outstanding, excluding shares of unvested restricted stock, as of December 31, 2021, 2020 and 2019 were as follows:


			As of December 31,
			2021						2020						2019
			Number of ordinary shares
Ordinary shares issued			250,347,345						138,847,345						141,847,345
Treasury shares			(4,951,897)						(8,448,807)						(10,263,856)
Ordinary shares outstanding			245,395,448						130,398,538						131,583,489
Shares of unvested restricted stock			(5,822,811)						(2,552,346)						(2,354,318)
Ordinary shares outstanding, excluding shares of unvested restricted stock			239,572,637						127,846,192						129,229,171