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SUPPLEMENTARY BALANCE SHEET INFORMATION (Schedule of Future Capital Lease Payments) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Capital lease      
2013 $ 4,130    
2014 4,063    
2015 3,641    
2016 3,285    
2017 3,207    
2018 and after 12,598    
Capital lease, future minumum payment receivable 30,924    
Unearned interest income 7,297    
Net investments in capital lease receivables $ 23,627    
Revenue from capital and operating leases 4183 15064 8868