Earnings Per Share

12 Months Ended

Dec. 31, 2015

Earnings Per Share [Abstract]

Earnings Per Share

Note 3.  Earnings Per Share

Class A and Class B basic earnings per share and Class B diluted earnings per share are calculated under the two-class method. The two-class method allocates earnings to each class of stock based upon its dividend rights.  Class B shares are convertible into Class A shares at a conversion ratio of 2,400 to 1. See Note 11, "Capital Stock".

Class A diluted earnings per share are calculated under the if-converted method, which reflects the conversion of Class B shares to Class A shares. Diluted earnings per share calculations include the dilutive effect of assumed issuance of stock-based awards under compensation plans that have the option to be paid in stock using the treasury stock method. See Note 9, "Incentive and Deferred Compensation Plans".

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:

(dollars in thousands, except per share data)						For the years ended December 31,
	2015					2014					2013
	Allocated net income (numerator)		Weighted shares (denominator)	Per- share amount		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	$	173,248	46,186,671	$	3.75	$	166,134	46,247,876	$	3.59	$	161,290	46,660,651	$	3.46
Dilutive effect of stock-based awards	0		211,340	—		0		267,558	—		0		94,306	—
Assumed conversion of Class B shares	1,430		6,100,800	—		1,371		6,100,800	—		1,321		6,100,800	—
Class A – Diluted EPS:
Income available to Class A stockholders on Class A equivalent shares	$	174,678	52,498,811	$	3.33	$	167,505	52,616,234	$	3.18	$	162,611	52,855,757	$	3.08
Class B – Basic EPS:
Income available to Class B stockholders	$	1,430	2,542	$	563	$	1,371	2,542	$	539	$	1,321	2,542	$	520
Class B – Diluted EPS:
Income available to Class B stockholders	$	1,429	2,542	$	562	$	1,369	2,542	$	538	$	1,320	2,542	$	519