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Transactions with related parties (Tables)
12 Months Ended
Dec. 31, 2014
Transactions With Related Parties [Abstract]  
Schedule Of Related Party Transactions [Table Text Block]
  2014 2013 2012
Management fees, including capitalized fees$ -$ 305$ 1,641
Commissions  -  127  687
Administrative fees  -  20  120
Brokerage fees  -  217  1,300