Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2011

Valuation and Qualifying Accounts [Abstract]

Valuation and Qualifying Accounts

Note 15 – Valuation and Qualifying Accounts

The following table summarizes the changes in our valuation and qualifying accounts:

	Balance at Beginning of Year		Charges (credits) to Cost and Expenses			Recoveries			Write-Offs			Balance at end of Year
Reserves in accounts receivable:
December 31, 2009		1,743		2,152			(106	)		(1,460	)		2,329
December 31, 2010		2,329		(72	)		(36	)		(581	)		1,640
December 31, 2011		1,640		618			22			(1,604	)		676