Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2022

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

To calculate diluted EPS, basic EPS is adjusted to include the effect of potentially dilutive stock options outstanding and contingently issuable equity awards. The table below shows our basic and diluted EPS calculations.

	Three Months Ended March 31,
	2022		2021
	(Dollars in thousands, except per share amounts)
Numerator
Net income	$	148,421	$	110,690
Less: distributed earnings allocated to participating securities	(194)		(158)
Less: undistributed earnings allocated to participating securities	(562)		(463)
Net income attributable to common stockholders (numerator for basic earnings per share)	147,665		110,069
Add back: undistributed earnings allocated to participating securities	562		463
Less: undistributed earnings reallocated to participating securities	(546)		(447)
Numerator for diluted earnings per share under two class method	$	147,681	$	110,085
Denominator
Weighted-average common shares outstanding	70,766,146		69,790,927
Add: dilutive effect of stock options	1,998,156		2,367,394
Add: dilutive effect of contingently issuable equity awards	174,112		629,856
Denominator for diluted earnings per share under two class method	72,938,414		72,788,177
Basic Earnings Per Common Share	$	2.09	$	1.58
Diluted Earnings Per Common Share	$	2.02	$	1.51