Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Summary Of Activity Relating To Allowance For Doubtful Accounts

The following is a summary of activity relating to the allowance for doubtful accounts for the years ended December 31, 2010, 2011 and 2012:

	In thousands
Balance at December 31, 2009	$	2,667
Charges to costs and expenses		455
Recoveries/write-offs		(1,671	)
Balance at December 31, 2010		1,451
Charges to costs and expenses		410
Recoveries/write-offs		(701	)
Balance at December 31, 2011		1,160
Charges to costs and expenses		1,469
Recoveries/write-offs		(516	)
Balance at December 31, 2012	$	2,113