Stock-based compensation costs for the years ended December 31, 2014, 2013 and 2012, are as follows:



	Year Ended December 31,
In thousands	2014		2013		2012
Stock-based compensation expensed
General and administrative expenses	$	27,789	$	30,429	$	26,463
Lease operating expenses	2,724		2,574		2,847
Total stock-based compensation expensed	30,513		33,003		29,310
Stock-based compensation capitalized	9,019		9,088		8,587
Total cost of stock-based compensation arrangements	$	39,532	$	42,091	$	37,897

Income tax benefit recognized for stock-based compensation arrangements	$	11,595	$	12,541	$	11,284

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