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Condensed 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
Net earnings | $ 106,955 |  | $ 64,131 | $ 39,674
Defined benefit pension and other postretirement employee benefits: |  |  |  |
Net (loss) gain arising during the period, net of tax benefit (expense) of $6,359, $15,830, and $(11,188) | 51,262 |  | (9,780) | (21,942)
Other Comprehensive Income (Loss), Finalization of Pension and Other Postretirement Benefit Plan Valuation, Net of Tax | 471 |  | 289 | 1,613
Prior service credit arising during the period, net of tax expense of $(2,267), $(1,163) and $(71) | (3,130) |  | 3,199 | 0
Amortization of actuarial loss included in net periodic cost, net of tax expense of $(4,761), $(3,513) and $(4,194) | 9,098 |  | 7,324 | 4,869
Amortization of prior service credit included in net periodic cost, net of tax benefit of $806, $252 and $230 | 101 |  | 1,240 | 350
Foreign currency translation adjustment | 0 |  | 0 | (874)
(Amortization) recognition of deferred taxes related to actuarial gain on other postretirement employee benefit obligations | 0 |  | (220) | (229)
Other comprehensive (loss) income, net of tax | 57,600 | [1] | (428) | (16,913)
Comprehensive income | $ 164,555 |  | $ 63,703 | $ 22,761
[1] | 2Net periodic costs associated with our pension and other postretirement employee benefit plans included in other comprehensive income and reclassified from accumulated other comprehensive loss includes $83.6 million of net gain on plan assets, $14.8 million of actuarial loss amortization, $5.1 million of prior service costs arising during the period, $0.8 million of curtailments and $0.2 million related to prior service credit, net of tax of $36.3 million. These accumulated other comprehensive loss components are included in the computation of net periodic pension and OPEB costs in Note 12, “Pension and Other Postretirement Employee Benefit Plans.”

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