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Note 11. Other Income | 12 Months Ended
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Mar. 31, 2012
Other Income and Other Expense Disclosure [Text Block] | 11. OTHER INCOME In March 2012 the Company recorded a net gain of approximately $48,000 related to the Company’s award of a Louisiana incentive program related to employment increases at the Westwego Terminal. These funds are expected to be received during the Company’s 2013 first or second fiscal quarter. As of March 31, 2012, receivables related to these awards were recorded as Receivables-other in the consolidated balance sheet.

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- Definition The entire disclosure for other income or other expense items (both operating and nonoperating). Sources of nonoperating income or nonoperating expense that may be disclosed, include amounts earned from dividends, interest on securities, profits (losses) on securities, net and miscellaneous other income or income deductions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3,6,7,9) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 3, 6, 7, 9 -Article 5 + Details
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Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration