| **Property and Equipment, Net (Tables)**     | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
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| **Property, Plant and Equipment [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| Property, Plant and Equipment                | Depreciation is computed using the straight-line method over the estimated economic lives of various assets, as follows:   Estimated Useful Life (in years)Railroad and equipment  15-30Furniture and fixtures  5-10Machinery and equipment  3-10Office equipment  5-10Autos and trucks  5Depreciation is computed on straight-line method over the estimated economic lives of the assets, as follows:      Estimated Useful Life (in years)Land  N/ALand improvements  15 - 20Buildings  20-40Building improvements  5-25Timber  N/AOperating property includes the following components: December 31, 2016 December 31, 2015Land and land improvements$73,239 $73,161Buildings and building improvements133,678 133,399Timber10,203 9,856 217,120 216,416Less: Accumulated depreciation67,349 64,069Total operating property, net$149,771 $152,347Property and equipment, net consists of the following: December 31, 2016 December 31, 2015Railroad and equipment$33,626 $33,626Furniture and fixtures19,191 16,749Machinery and equipment8,998 9,900Office equipment5,154 5,600Autos and trucks1,075 1,044 68,044 66,919Less: Accumulated depreciation59,404 57,103 8,640 9,816Construction in progress352 329Total property and equipment, net$8,992 $10,145 |

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| - References
No definition available.
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| - Definition
Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682
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