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Schedule II (Details) (Allowance for Doubtful Accounts [Member], USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Allowance for Doubtful Accounts [Member]
    
Valuation and Qualifying Accounts Disclosure [Line Items]    
Balance at Beginning of Year $ 258 $ 236
(Recovered)/Charged to Costs and Expenses 51 98
Charged to Other Accounts 0 0
Deductions 168 [1] 76 [1]
Balance at End of Year $ 141 $ 258
[1] Amount represents uncollectible accounts written off.