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
Doubtful trade receivables and returns and allowances [Member]
Valuation and qualifying accounts [Roll Forward]
Balance Beginning of Year	$ 450	$ 1,083	$ 627
Charged/(Credited) to Cost and Expenses	193	(103)	478
Charged/(Credited) to Other Accounts	12	(39)	(22)
Deductions	3	491	0
Balance End of Year	652	450	1,083
Deferred tax valuation allowance [Member]
Valuation and qualifying accounts [Roll Forward]
Balance Beginning of Year	77,571	77,849	80,368
Charged/(Credited) to Cost and Expenses	(45,105)	(9,546)	(14,246)
Charged/(Credited) to Other Accounts	(2,525)	9,268	11,727
Deductions	0	0	0
Balance End of Year	$ 29,941	$ 77,571	$ 77,849