SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (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]
Beginning Balance	$ 359	$ 253	$ 279
Charge to Cost/Expense	(140)	157	(23)
Other Charge to Cost/Expense	86	0	0
Write-offs net of Recoveries	(18)	(51)	(3)
Ending Balance	$ 287	$ 359	$ 253