Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2013

Earnings Per Share [Abstract]

Schedule of Earnings Per Share

	Three Months Ended June 30,
	2013			2012
	Class A		Class B	Class A	Class B
	(In thousands except per share amounts)
Numerator for Basic and Diluted Earnings Per Share:
Net income	$	26,991		23,246
Dividends - Class A shares	—			—
Dividends - Class B shares	—			—
Undistributed income	$	26,991		23,246
Allocation of net income:
Dividends	$	—	—	—	—
Allocation of undistributed income	26,227		764	22,589	658
Net income	$	26,227	764	22,589	658
Denominator:
Basic earnings per share - weighted-average shares	3,435		200	3,435	200
Effect of dilutive stock options	7		—	—	—
Diluted earnings per share - adjusted weighted-average shares for assumed conversions	3,442		200	3,435	200
Basic Earnings Per Share	$	7.64	3.82	6.58	3.29
Diluted Earnings Per Share	$	7.62	3.82	6.58	3.29

	Six Months Ended June 30,
	2013			2012
	Class A		Class B	Class A	Class B
	(In thousands except per share amounts)
Numerator for Basic and Diluted Earnings Per Share:
Net income	$	43,623		42,987
Dividends - Class A shares	—			—
Dividends - Class B shares	—			—
Undistributed income	$	43,623		42,987
Allocation of net income:
Dividends	$	—	—	—	—
Allocation of undistributed income	42,389		1,234	41,771	1,216
Net income	$	42,389	1,234	41,771	1,216
Denominator:
Basic earnings per share - weighted-average shares	3,435		200	3,435	200
Effect of dilutive stock options	6		—	—	—
Diluted earnings per share - adjusted weighted-average shares for assumed conversions	3,441		200	3,435	200
Basic Earnings Per Share	$	12.34	6.17	12.16	6.08
Diluted Earnings Per Share	$	12.32	6.17	12.16	6.08