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Comprehensive Income (Details 3) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jun. 30, 2014
Amortization of defined benefit pension items  
Amortization of defined benefit pension items, Prior service cost $ (55) [1]
Amortization of defined benefit pension items, Actuarial losses 409 [1]
Amortization of defined benefit pension items, Total before tax 354
Amortization of defined benefit pension items, Tax benefit (138)
Amortization of defined benefit pension items, Net of tax $ 216
[1] These amounts were included in the computation of net periodic pension cost. See Note 7 for additional details.