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Impairment of Long-Lived assets (Tables)
12 Months Ended
Dec. 31, 2013
Impaired Long-Lived Assets Held and Used [Line Items]  
Schedule of Capital Leased Assets [Table Text Block]
 December 31, 2013 December 31, 2012
Estimated residual value of leased assets$ 1,465 $ 1,492
Less: unearned income  767   807
Net investment in long-term leases$ 698 $ 685