Basis of Presentation and Principles of Consolidation (Tables)

3 Months Ended

Mar. 31, 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:

	Three Months Ended, March 31, 2014
In thousands, except per share data	As Reported Under the Treasury Stock Method		Amount Allocated to Participating Securities			As Revised Under the Two-Class Method
Income from continuing operations used in basic per share calculation	$	27,606	$	(746	)	$	26,860
Income from continuing operations used in diluted per share calculation	$	27,606	$	(727	)	$	26,879
Weighted average shares used in basic per share calculation	23,944		—			23,944
Weighted average shares used in diluted per share calculation	24,775		(200		)	24,575
Basic earnings per common share from continuing operations	$	1.15	$	(0.03	)	$	1.12
Diluted earnings per common share from continuing operations	$	1.11	$	(0.02	)	$	1.09

Impact of Immaterial Error Correction

The impact of the immaterial error on our prior period consolidated statements of cash flows is presented in the following table:

	Three Months Ended, March 31, 2014
Dollars in thousands	As Reported			Adjustment			As Revised
Cash flows from changes in operating assets and liabilities:
Accounts payable	$	(27,672	)	$	282		$	(27,390	)
Net cash flows from operating activities	$	94,305		$	282		$	94,587
Investing Activities:
Purchases of property and equipment	$	(26,658	)	$	(282	)	$	(26,940	)
Net cash flows from investing activities	$	(36,327	)	$	(282	)	$	(36,609	)
Supplemental disclosure of non-cash investing and financing activities:
Purchases of property and equipment included in ending accounts payable	$	13,120		$	(5,880	)	$	7,240