A reconciliation of the numerators and denominators used in the basic and diluted per-share computations is presented as follows for each class of common stock:



	Three months ended June 30,
	2018					2017
(dollars in thousands, except per share data)	Allocated net income (numerator)		Weighted shares (denominator)	Per-share amount		Allocated net income (numerator)		Weighted shares (denominator)	Per-share amount
Class A – Basic EPS:
Income available to Class A stockholders	$	79,053	46,188,705	$	1.71	$	58,048	46,180,852	$	1.26
Dilutive effect of stock-based awards	0		23,344	—		0		17,743	—
Assumed conversion of Class B shares	653		6,100,800	—		479		6,100,800	—
Class A – Diluted EPS:
Income available to Class A stockholders on Class A equivalent shares	$	79,706	52,312,849	$	1.52	$	58,527	52,299,395	$	1.12
Class B – Basic EPS:
Income available to Class B stockholders	$	653	2,542	$	257	$	479	2,542	$	189
Class B – Diluted EPS:
Income available to Class B stockholders	$	653	2,542	$	257	$	479	2,542	$	188



	Six months ended June 30,
	2018					2017
(dollars in thousands, except per share data)	Allocated net income (numerator)		Weighted shares (denominator)	Per-share amount		Allocated net income (numerator)		Weighted shares (denominator)	Per-share amount
Class A – Basic EPS:
Income available to Class A stockholders	$	144,273	46,188,309	$	3.12	$	105,532	46,184,666	$	2.28
Dilutive effect of stock-based awards	0		22,632	—		0		69,748	—
Assumed conversion of Class B shares	1,191		6,100,800	—		871		6,100,800	—
Class A – Diluted EPS:
Income available to Class A stockholders on Class A equivalent shares	$	145,464	52,311,741	$	2.78	$	106,403	52,355,214	$	2.03
Class B – Basic EPS:
Income available to Class B stockholders	$	1,191	2,542	$	469	$	871	2,542	$	343
Class B – Diluted EPS:
Income available to Class B stockholders	$	1,191	2,542	$	468	$	871	2,542	$	343