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Long-Term Debt (tables) | 12 Months Ended
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Mar. 31, 2013
Long-term Debt, Unclassified [Abstract] |
Schedule of Long-term Debt Instruments [Table Text Block] |
5. Long-Term Debt |  |  |  |
|  | 2013 |  | 2012
|  | (In thousands)
Revolving credit facility, |  |  |  |
1.70% and 1.69%, due through 2017 | $ | 188,000 | $ | 144,149
Secured note payable to insurance company, |  |  |  |
8.03%, due through 2014 |  | 38,138 |  | 43,452
Secured Industrial Revenue Development Bonds, |  |  |  |
3.29%, and 3.38%, due through 2029 |  | 22,630 |  | 22,630
Secured promissory note, |  |  |  |
6.98%, due through 2022 |  | 16,753 |  | 18,096
Secured promissory note, |  |  |  |
6.35%, due through 2020 |  | 4,303 |  | 4,840
Secured Industrial Revenue Development Bond, |  |  |  |
8.10%, paid in 2013 |  | 0 |  | 661
Other |  | 362 |  | 381
|  | 270,186 |  | 234,209
Less current portion |  | 40,170 |  | 7,336
| $ | 230,016 | $ | 226,873
Long Term Debt Repayement [table text block] |
Years ending March 31: |
2014 |  | $ | 40,170 |
2015 |  |  | 2,175 |
2016 |  |  | 2,332 |
2017 |  |  | 190,466 |
2018 |  |  | 7,699 |
Thereafter |  |  | 27,344 |
Total |  | $ | 270,186 |

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- Definition Tabular disclosure of a repayment requirments for the next five fiscal year for long term debt. + References No definition available. + Details
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- Definition Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(e),(f)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21538-112644 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644 + Details
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