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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified | Apr. 30, 2012 | Apr. 30, 2011
--- | --- | ---
ASSETS |  |
Mortgage loans receivable, net of allowance | $ 0 | $ 3
Other assets |  |
Receivable arising from straight-lining of rents, allowance | 1,209 | 996
Accounts receivable, allowance | 154 | 317
Intangible assets, accumulated amortization | 47,813 | 42,154
Property and equipment, accumulated depreciation | 1,423 | 1,231
Deferred charges and leasing costs, accumulated amortization | 16,244 | 13,675
EQUITY |  |
Preferred Shares of Beneficial Interest, no par value (in dollars per share) | $ 0 |
Preferred Shares of Beneficial Interest, shares issued (in shares) | 1,150,000 | 1,150,000
Preferred Shares of Beneficial Interest, shares outstanding (in shares) | 1,150,000 | 1,150,000
Preferred Shares of Beneficial Interest, aggregate liquidation preference | $ 28,750,000 | $ 28,750,000
Common Shares of Beneficial Interest, no par value (in dollars per share) | $ 0 | $ 0
Common Shares of Beneficial Interest, shares issued (in shares) | 89,473,838 | 80,523,265
Common Shares of Beneficial Interest, shares outstanding (in shares) | 89,473,838 | 80,523,265
Noncontrolling interests - Operating Partnership (in shares) | 20,332,415 | 20,067,350

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