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Business Segments - Business Segments (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2012 | Nov. 07, 2013 | Sep. 30, 2011
Revenues | $ 160,140 | $ 139,774 | $ 127,514 |  |
Operating profit | 17,768 | 20,434 | 14,101 |  |
Corporate expenses | (5,223) | (4,851) | (4,408) |  |
Interest expense | 1,475 | 2,520 | 2,638 |  |
Capital expenditures | 32,311 | 38,548 | 34,348 |  |
Depreciation, depletion and amortization | 16,139 | 14,065 | 12,994 |  |
Identifiable net assets | 313,071 | 287,093 | 275,705 |  |
Discontinued transportation assets |  |  | 0 |  |
Cash items | 1,013 | 502 | 6,713 |  | 21,026
(a) Capital expenditures related to the Pipeline Transportation, Inc. acquisition |  |  |  | 3,397 |
(b) Receivable on previously capitalized real estate taxes on Anacostia property |  |  | 2,311 |  |
Transportation |  |  |  |  |
Revenues | 129,162 | 112,120 | 103,476 |  |
Operating profit | 8,027 | 11,119 | 9,107 |  |
Corporate expenses | (1,721) | (1,765) | (1,631) |  |
Capital expenditures | 13,028 | 15,612 | 10,459 |  |
Depreciation, depletion and amortization | 8,813 | 7,401 | 6,750 |  |
Identifiable net assets | 59,465 | 49,410 | 42,642 |  |
(a) Capital expenditures related to the Pipeline Transportation, Inc. acquisition | 3,397 |  |  |  |
Mining royalty land |  |  |  |  |
Revenues | 5,349 | 5,302 | 4,483 |  |
Operating profit | 4,736 | 4,739 | 3,905 |  |
Corporate expenses | (755) | (731) | (674) |  |
Interest expense | 44 | 59 | 40 |  |
Capital expenditures | 0 | 0 | 11,039 |  |
Depreciation, depletion and amortization | 124 | 105 | 112 |  |
Identifiable net assets | 39,368 | 40,008 | 39,695 |  |
Developed property rentals |  |  |  |  |
Revenues | 25,629 | 22,352 | 19,555 |  |
Operating profit | 10,228 | 9,427 | 5,497 |  |
Corporate expenses | (1,133) | (1,094) | (1,012) |  |
Interest expense | 1,431 | 2,461 | 2,598 |  |
Capital expenditures | 16,939 | 19,751 | 11,804 |  |
Capital expenditures - capitalized interest | 1,763 | 1,863 | 1,646 |  |
Capital expenditures - internal labor | 469 | 418 | 609 |  |
Capital expenditures - real estate taxes (a) | 112 | 904 | (1,209) |  |
Depreciation, depletion and amortization | 6,721 | 6,141 | 5,729 |  |
Identifiable net assets | 211,556 | 195,476 | 184,358 |  |
(b) Receivable on previously capitalized real estate taxes on Anacostia property |  |  | 2,311 |  |
Corporate |  |  |  |  |
Corporate expenses | (1,614) | (1,261) | (1,091) |  |
Depreciation, depletion and amortization | 481 | 418 | 403 |  |
Identifiable net assets | $ 1,669 | $ 1,697 | $ 2,297 |  |

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