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
Allowance for doubtful accounts [Member]
VALUATION AND QUALIFYING ACCOUNTS
Balance at beginning of Year	$ 1,072	$ 1,172	$ 3,892
Additions Charged to Expense	708	1,696	615
Additions Charged to Other Accounts
Deductions Write Offs	(630)	(1,796)	(3,335)
Deductions Credited to Other Accounts
Balance at end of Year	1,150	1,072	1,172
Deferred tax valuation allowance [Member]
VALUATION AND QUALIFYING ACCOUNTS
Balance at beginning of Year	356	411	162
Additions Charged to Expense	14,220		411
Additions Charged to Other Accounts
Deductions Write Offs		(55)	(162)
Deductions Credited to Other Accounts
Balance at end of Year	$ 14,576	$ 356	$ 411