CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands |
Sep. 30, 2016 |
Sep. 30, 2015 |
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Real estate properties, net of accumulated depreciation | $ 41,995 | $ 34,142 |
| Debt Issuance Costs, Net | $ 6,275 | $ 5,327 |
| Preferred shares, par value (in dollars per share) | $ 1.0 | $ 1.0 |
| Preferred shares, authorized (in shares) | 10,000,000 | 10,000,000 |
| Preferred shares, issued (in shares) | 0 | 0 |
| Shares of beneficial interest, par value (in dollars per share) | $ 3.0 | $ 3.0 |
| Shares of beneficial interest, issued (in shares) | 13,232,000 | 13,428,000 |
| Debt Instrument [Line Items] | ||
| Commitments and contingencies | ||
| Mortgages | ||
| Statement of Financial Position [Abstract] | ||
| Debt Issuance Costs, Net | 5,873 | 4,905 |
| Junior subordinated notes | ||
| Statement of Financial Position [Abstract] | ||
| Debt Issuance Costs, Net | $ 402 | $ 422 |