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INCOME TAXES (Details) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2013 | Mar. 31, 2012 | Dec. 31, 2012
INCOME TAXES |  |  |
State tax, low end of range of rate (as a percent) | 6.00% |  |
State tax, high end of range of rate (as a percent) | 6.50% |  |
Alternative fuel tax credit | $ 300,000 |  | $ 900,000
Valuation allowance for deferred tax assets |  | 4,700,000 |
Refund of federal and state taxes | 0 |  |
State and foreign income taxes paid | 500,000 |  |
Reconciliation between the effective income tax rate, as computed on loss before income taxes, and the statutory federal income tax rate |  |  |
Income tax benefit at the statutory federal rate | (8,156,000) | (7,888,000) |
Federal income tax effects of: |  |  |
Increase in valuation allowances | 312,000 | 4,660,000 |
Alternative fuel tax credit | (1,180,000) |  |
Effect of permanent differences and other | 18,000 | (235,000) |
State income taxes | (902,000) | (911,000) |
Total income tax benefit | $ (9,908,000) | $ (4,374,000) |
Income tax benefit at the statutory federal rate (as a percent) | (35.00%) | (35.00%) |
Federal income tax effects of: |  |  |
Increase in valuation allowances (as a percent) | 1.30% | 20.70% |
Alternative fuel tax credit (as a percent) | (5.00%) |  |
Effect of permanent differences and other (as a percent) | 0.10% | (1.00%) |
State income taxes (as a percent) | (3.90%) | (4.10%) |
Total income tax benefit (as a percent) | (42.50%) | (19.40%) |

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 43-49 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 17 -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 47 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=6889476&loc=d3e330036-122817 + Details
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