SCHEDULE VALUATION AND QUALIFYING ACCOUNTS AND RESERVES (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Fiscal Period	$ 1,668		$ 1,883		$ 1,953
Charges to Costs and Expense	932		1,082		1,253
Deductions	(791)	[1]	(1,297)	[1]	(1,323)	[1]
Balance at End of Fiscal Period	$ 1,809		$ 1,668		$ 1,883

[1] Deductions in the allowance for doubtful accounts represent write-offs of uncollectible accounts net of recoveries.