XML 47 R35.htm IDEA: XBRL DOCUMENT v3.6.0.2
BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES, Identified Intangible Assets and Liabilities (Details) - USD ($)
 3 Months Ended 9 Months Ended
Jan. 31, 2017
Oct. 31, 2016
Jan. 31, 2016
Oct. 31, 2015
Jan. 31, 2017
Jan. 31, 2016
Apr. 30, 2016
Identified Intangible Assets and Liabilities and Goodwill [Abstract]              
Finite-lived Intangible Assets Acquired           $ 1,300,000  
Addition to intangible liabilities           $ 101,000  
Weighted average lives of intangible assets acquired         0 years 9 months 18 days  
Identified intangible assets (included in intangible assets) [Abstract]              
Gross carrying amount $ 6,103,000       $ 6,103,000   $ 8,088,000
Accumulated amortization (5,372,000)       (5,372,000)   (6,230,000)
Net carrying amount 731,000       731,000   1,858,000
Identified intangible liabilities (included in other liabilities) [Abstract]              
Gross carrying amount 157,000       157,000   159,000
Accumulated amortization (71,000)       (71,000)   (55,000)
Net carrying amount 86,000       86,000   $ 104,000
Amortization of above and below market leases (1,000) $ 3,000   $ 3,000 8,000 $ 14,000  
Amortization of all other identified intangible assets 106,000   $ 533,000   1,100,000 $ 1,100,000  
Estimated annual amortization of acquired below-market leases, net of acquired above-market leases [Abstract]              
2018 (11,000)       (11,000)    
2019 (20,000)       (20,000)    
2020 (16,000)       (16,000)    
2021 (13,000)       (13,000)    
2022 (6,000)       (6,000)    
Estimated annual amortization [Abstract]              
2018 269,000       269,000    
2019 170,000       170,000    
2020 104,000       104,000    
2021 78,000       78,000    
2022 $ 25,000       $ 25,000