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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables) | 9 Months Ended
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Jan. 31, 2013
BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES [Abstract] |
Identified intangible assets and intangible liabilities | The Company's identified intangible assets and intangible liabilities at January 31, 2013 and April 30, 2012 were as follows:
|  | (in thousands) |
|  | January 31, 2013 |  |  | April 30, 2012 |
Identified intangible assets (included in intangible assets): |  |  |  |  |  |
Gross carrying amount |  | $ | 67,608 |  |  | $ | 92,401 |
Accumulated amortization |  |  | (26,599 | ) |  |  | (47,813 | )
Net carrying amount |  | $ | 41,009 |  |  | $ | 44,588 |
Identified intangible liabilities (included in other liabilities): |  |  |  |  |  |  |  |
Gross carrying amount |  | $ | 391 |  |  | $ | 1,104 |
Accumulated amortization |  |  | (288 | ) |  |  | (967 | )
Net carrying amount |  | $ | 103 |  |  | $ | 137 |
Estimated annual amortization of acquired below-market leases, net of acquired above-market leases | The effect of amortization of acquired below-market leases and acquired above-market leases on rental income was approximately $(7,000) and $(8,000) for the three months ended January 31, 2013 and 2012, respectively, and $(21,000) and $(40,000) for the nine months ended January 31, 2013 and 2012. The estimated annual amortization of acquired below-market leases, net of acquired above-market leases for each of the five succeeding fiscal years is as follows:
Year Ended April 30, |  | (in thousands) |
2014 |  | $ | 37 |
2015 |  |  | 18 |
2016 |  |  | 14 |
2017 |  |  | 6 |
2018 |  |  | (5 | )
Estimated annual amortization of all other identified intangible assets | Amortization of all other identified intangible assets (a component of depreciation and amortization expense) was $1.2 million and $1.2 million for the three months ended January 31, 2013 and 2012, respectively, and $4.3 million and $4.4 million for the nine months ended January 31, 2013 and 2012. The estimated annual amortization of all other identified intangible assets for each of the five succeeding fiscal years is as follows:
Year Ended April 30, |  | (in thousands) |
2014 |  | $ | 4,146 |
2015 |  |  | 3,825 |
2016 |  |  | 3,608 |
2017 |  |  | 3,139 |
2018 |  |  | 2,652 |

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- Definition Tabular disclosure of the estimated annual amortization of acquired below-market leases, net of acquired above-market leases for each of the five succeeding fiscal years. + References No definition available. + Details
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- Definition Tabular disclosure of identified intangible assets and intangible liabilities as of the reporting date including gross carrying amounts, accumulated amortization and net carrying amounts. + References No definition available. + Details
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- Definition Tabular disclosure of the estimated aggregate amortization expense for intangible assets subject to amortization for each of the five succeeding fiscal years. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 + Details
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