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Note 8 - Rental Income Under Operating Leases (Tables)
3 Months Ended
Mar. 31, 2017
Notes Tables  
Lessor, Operating Lease, Payments to be Received, Maturity [Table Text Block]
2017 (Remainder)
  $
16,154
 
2018
   
21,648
 
2019
   
16,813
 
2020
   
10,247
 
2021
   
4,749
 
Thereafter
   
23,629
 
Total
   
93,240