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INCOME TAXES (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Current provision (benefit): |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  |  | $ (872) | $ (10,756)
State |  |  |  |  |  |  |  |  | 694 | 487 | 549
Foreign |  |  |  |  |  |  |  |  | 405 | 489 | 288
Current provision (benefit) |  |  |  |  |  |  |  |  | 1,099 | 104 | (9,919)
Deferred provision (benefit): |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | (8,656) | 2,664 | (7,831)
State |  |  |  |  |  |  |  |  | (1,699) | 415 | (3,596)
Foreign |  |  |  |  |  |  |  |  | (4) | (23) | (30)
Deferred tax provision (benefit) |  |  |  |  |  |  |  |  | (10,359) | 3,056 | (11,457)
Income tax provision (benefit) | (4,387) | 5,258 | (5,757) | (4,374) | 530 | 6,808 | 3,169 | (7,346) | (9,260) | 3,160 | (21,376)
Significant components of the deferred tax provision or benefit |  |  |  |  |  |  |  |  |  |  |
Amortization, depreciation, and basis differences for property, plant and equipment and other long-lived assets |  |  |  |  |  |  |  |  | 137 | 15,059 | (11,552)
Amortization of intangibles |  |  |  |  |  |  |  |  | (1,604) |  |
Changes in reserves for workers' compensation and cargo claims |  |  |  |  |  |  |  |  | (3,319) | (970) | 1,759
Revenue recognition |  |  |  |  |  |  |  |  | (253) | 654 | 1,201
Allowance for doubtful accounts |  |  |  |  |  |  |  |  | 229 | (705) | (428)
Foreign tax credit carryforward |  |  |  |  |  |  |  |  | (133) | (240) | 286
Nonunion pension and other retirement plans |  |  |  |  |  |  |  |  | 702 | (4,885) | (963)
Deferred compensation plans |  |  |  |  |  |  |  |  | 669 | 853 | 696
Federal net operating loss carryforwards |  |  |  |  |  |  |  |  | (2,538) | (680) |
State net operating loss carryforwards |  |  |  |  |  |  |  |  | (725) | 705 | (302)
State depreciation adjustments |  |  |  |  |  |  |  |  | 20 | (1,179) | 74
Share-based compensation |  |  |  |  |  |  |  |  | (702) | (941) | (971)
Valuation allowance decrease |  |  |  |  |  |  |  |  | (3,180) | (782) | (558)
Leases |  |  |  |  |  |  |  |  | 806 | (316) | (585)
Other accrued expenses |  |  |  |  |  |  |  |  | (1,586) | (863) | 629
Other |  |  |  |  |  |  |  |  | 1,118 | (2,654) | (743)
Deferred tax provision (benefit) |  |  |  |  |  |  |  |  | $ (10,359) | $ 3,056 | $ (11,457)

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- Definition The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted federal tax law to the domestic taxable Income or Loss from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 289 -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 -Glossary Current Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6509736 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 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.7) -URI http://asc.fasb.org/extlink&oid=6889476&loc=d3e330036-122817 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section I -Paragraph Question 1-7 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 45 -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 7: 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.(h)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 + Details
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- Definition The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted state and local tax law to relevant amounts of taxable Income or Loss from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section I -Subsection 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Current Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6509736 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 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.7) -URI http://asc.fasb.org/extlink&oid=6889476&loc=d3e330036-122817 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 289 -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 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 45 -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 7: 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.(h)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 + Details
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