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Business Segments - Business segments (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Revenues | $ 38,820 | $ 33,057 |  |
Operating profit | 4,124 | 4,408 |  |
Interest expense | 311 | 428 |  |
Depreciation, depletion and amortization | 3,775 | 3,271 |  |
Cash items | 579 | 1,440 | 502 | 6,713
Total identifiable net assets | 303,669 |  | 287,093 |
(a) Capital expenditures related to the Pipeline Transportation, Inc. acquisition | 3,397 |  |  |
Transportation |  |  |  |
Revenues | 31,591 | 26,639 |  |
Operating profit | 1,948 | 2,268 |  |
Corporate expenses | (492) | (471) |  |
Capital expenditures (a) | 8,731 | 6,787 |  |
Depreciation, depletion and amortization | 2,030 | 1,753 |  |
Identifiable net assets | 64,038 |  | 49,410 |
Mining royalty land |  |  |  |
Revenues | 1,268 | 1,331 |  |
Operating profit | 1,128 | 1,199 |  |
Corporate expenses | (189) | (176) |  |
Interest expense | 26 | 11 |  |
Capital expenditures (a) | 0 | 0 |  |
Depreciation, depletion and amortization | 28 | 25 |  |
Identifiable net assets | 39,914 |  | 40,008 |
Developed property rentals |  |  |  |
Revenues | 5,961 | 5,087 |  |
Operating profit | 2,366 | 2,115 |  |
Corporate expenses | (283) | (264) |  |
Interest expense | 285 | 417 |  |
Capital expenditures (a) | 3,134 | 3,212 |  |
Capital expenditures - Capitalized interest | 516 | 591 |  |
Capital expenditures - Internal labor | 95 | 110 |  |
Capital expenditures - Real estate taxes | 24 | 251 |  |
Depreciation, depletion and amortization | 1,599 | 1,388 |  |
Identifiable net assets | 197,174 |  | 195,476 |
Corporate |  |  |  |
Corporate expenses | (354) | (263) |  |
Depreciation, depletion and amortization | 118 | 105 |  |
Identifiable net assets | $ 1,964 |  | $ 1,697 |

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