SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Details) (Allowance for Doubtful Accounts, USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Allowance for Doubtful Accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 684	$ 681	$ 2,167
Charged (Credited) to Income	(143)	8	(1,154)
Deduction and Other	0	(5)	(332)
Balance at End of Year	$ 541	$ 684	$ 681