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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] |  |  |
NET INCOME (LOSS) | $ 15,811 | $ (7,732) | $ 6,333
LESS: NONCONTROLLING INTEREST IN NET INCOME OF SUBSIDIARY | 0 | 0 | 174
NET INCOME (LOSS) ATTRIBUTABLE TO ARKANSAS BEST CORPORATION | 15,811 | (7,732) | 6,159
Pension and other postretirement benefit plans: |  |  |
Net gain from curtailment, net of tax of: (2013 – $11,384) | 17,878 | 0 | 0
Net actuarial gain (loss), net of tax of: (2013 – $11,892; 2012 – $3,709; 2011 – $10,804) | 18,683 | (5,830) | (27,178)
Pension settlement expense, net of tax of: (2013 – $821; 2011 – $438) | 1,290 | 0 | 687
Amortization of unrecognized net periodic benefit costs, net of tax of: (2013 – $3,014; 2012 – $4,354; 2011 – $2,789) |  |  |
Net actuarial loss | 4,847 | 6,957 | 4,497
Prior service credit | (116) | (116) | (115)
Foreign currency translation and other: |  |  |
Change in foreign currency translation, net of tax of: (2013 – $79; 2012 – $10; 2011 – $69) | (122) | 19 | (108)
Other, net of tax of: (2011 – $70) | 0 | 0 | (132)
OTHER COMPREHENSIVE INCOME (LOSS), net of tax | 42,460 | 1,030 | (22,349)
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO ARKANSAS BEST CORPORATION | $ 58,271 | $ (6,702) | $ (16,190)

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