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 September 30,
	2017					2016
(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	$	58,064	46,188,949	$	1.26	$	56,906	46,188,980	$	1.23
Dilutive effect of stock-based awards	0		27,127	—		0		121,523	—
Assumed conversion of Class B shares	479		6,100,800	—		470		6,100,800	—
Class A – Diluted EPS:
Income available to Class A stockholders on Class A equivalent shares	$	58,543	52,316,876	$	1.12	$	57,376	52,411,303	$	1.09
Class B – Basic EPS:
Income available to Class B stockholders	$	479	2,542	$	189	$	470	2,542	$	185
Class B – Diluted EPS:
Income available to Class B stockholders	$	479	2,542	$	189	$	469	2,542	$	185



	Nine months ended September 30,
	2017					2016
(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	$	163,596	46,186,109	$	3.54	$	163,233	46,188,971	$	3.53
Dilutive effect of stock-based awards	0		55,541	—		0		152,926	—
Assumed conversion of Class B shares	1,350		6,100,800	—		1,347		6,100,800	—
Class A – Diluted EPS:
Income available to Class A stockholders on Class A equivalent shares	$	164,946	52,342,450	$	3.15	$	164,580	52,442,697	$	3.14
Class B – Basic EPS:
Income available to Class B stockholders	$	1,350	2,542	$	531	$	1,347	2,542	$	530
Class B – Diluted EPS:
Income available to Class B stockholders	$	1,350	2,542	$	531	$	1,346	2,542	$	529