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Schedule III-Real Estate and Accumulated Depreciation - Footers (Details) - USD ($)
$ in Thousands
Nov. 30, 2017
Jul. 22, 2016
Jul. 21, 2016
Real Estate and Accumulated Depreciation      
SEC Schedule III, Real Estate, federal income tax basis $ 269,318    
Webster Credit Line      
Real Estate and Accumulated Depreciation      
Maximum borrowing capacity   $ 15,000 $ 12,500
Locations 1 and 21-29 | Webster Credit Line      
Real Estate and Accumulated Depreciation      
Maximum borrowing capacity $ 15,000