CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($)
|
Jan. 31, 2016 |
Apr. 30, 2015 |
| ASSETS |
|
|
| Intangible assets, accumulated amortization |
$ 21,214,000
|
$ 19,610,000
|
| Property and equipment, accumulated depreciation |
1,116,000
|
1,464,000
|
| Deferred charges and leasing costs, accumulated amortization |
$ 9,078,000
|
$ 8,077,000
|
| EQUITY |
|
|
| Common Shares of Beneficial Interest, no par value (in dollars per share) |
$ 0
|
$ 0
|
| Common Shares of Beneficial Interest, shares issued (in shares) |
121,033,647
|
124,455,624
|
| Common Shares of Beneficial Interest, shares outstanding (in shares) |
121,033,647
|
124,455,624
|
| Noncontrolling interests - Operating Partnership (in shares) |
13,863,575
|
13,999,725
|
| Receivable Arising from Straight-Lining of Rents [Member] |
|
|
| ASSETS |
|
|
| Accounts receivable, allowance |
$ 766,000
|
$ 718,000
|
| Accounts Receivable [Member] |
|
|
| ASSETS |
|
|
| Accounts receivable, allowance |
$ 163,000
|
$ 438,000
|
| Preferred Series A [Member] |
|
|
| EQUITY |
|
|
| Preferred Shares of Beneficial Interest, no par value (in dollars per share) |
$ 0
|
$ 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
|
| Preferred Series B [Member] |
|
|
| EQUITY |
|
|
| Preferred Shares of Beneficial Interest, no par value (in dollars per share) |
$ 0
|
$ 0
|
| Preferred Shares of Beneficial Interest, shares issued (in shares) |
4,600,000
|
4,600,000
|
| Preferred Shares of Beneficial Interest, shares outstanding (in shares) |
4,600,000
|
4,600,000
|
| Preferred Shares of Beneficial Interest, aggregate liquidation preference |
$ 115,000,000
|
$ 115,000,000
|