Basis of Presentation and Principles of Consolidation (Tables)

6 Months Ended

Jun. 30, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Comparison of Earnings Per Share Calculation Methods

The impact of applying the Two-Class Method on both income from continuing operations and basic and diluted weighted average shares used to calculate earnings per common share is as follows:

	As Reported Under the Treasury Stock Method				Amount Allocated to Participating Securities						As Revised Under the Two-Class Method
	Three Months Ended		Six Months Ended		Three Months Ended			Six Months Ended			Three Months Ended		Six Months Ended
In thousands, except per share data	June 30, 2014				June 30, 2014						June 30, 2014
Income from continuing operations used in basic per share calculation	$	23,833	$	51,439	$	(817	)	$	(1,559	)	$	23,016	$	49,880
Income from continuing operations used in diluted per share calculation	$	23,833	$	51,439	$	(797	)	$	(1,521	)	$	23,036	$	49,918
Weighted average shares used in basic per share calculation	19,541		21,730		—			—			19,541		21,730
Weighted average shares used in diluted per share calculation	20,181		22,488		(133		)	(190		)	20,048		22,298
Basic earnings per common share from continuing operations	$	1.22	$	2.37	$	(0.04	)	$	(0.07	)	$	1.18	$	2.30
Diluted earnings per common share from continuing operations	$	1.18	$	2.29	$	(0.03	)	$	(0.05	)	$	1.15	$	2.24