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Note 12 - Segment Reporting (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Interest Expense $ 8,652 $ 9,211
Payments to Acquire Real Estate 3,102 3,358
Commercial Segment [Member]    
Interest Expense 1,881 1,844
Payments to Acquire Productive Assets 1,011 30
Residential Segment [Member]    
Interest Expense 6,771 7,367
Payments to Acquire Productive Assets $ 2,091 $ 3,328