XML 23 R73.htm IDEA: XBRL DOCUMENT v2.4.0.6
Schedule II - Valuation And Qualifying Accounts and Reserves (Details) (Allowance For Doubtful Accounts [Member], 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 Disclosure [Line Items]      
Balance - Beginning of Period $ 4,506 $ 4,069 $ 4,640
Additions Charged to Costs and Expenses 2,160 2,450 2,200
Additions Charged to Other Accounts 0 0 0
Deductions 2,696 [1] 2,013 [1] 2,771
Balance - End Of Period $ 3,970 $ 4,506 $ 4,069
[1] Represents write-offs