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Employee Benefits and Share Option Plans - Amounts Related to Shipboard Retirement Plan (Detail 4) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Pension expense: | |||
| Service cost | $ 1,393us-gaap_DefinedBenefitPlanServiceCost | $ 1,498us-gaap_DefinedBenefitPlanServiceCost | $ 1,367us-gaap_DefinedBenefitPlanServiceCost |
| Interest cost | 728us-gaap_DefinedBenefitPlanInterestCost | 603us-gaap_DefinedBenefitPlanInterestCost | 604us-gaap_DefinedBenefitPlanInterestCost |
| Amortization of prior service cost | 378us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit | 378us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit | 378us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit |
| Amortization of actuarial loss | 90us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses | 13us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses | |
| Total pension expense | 2,499us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost | 2,569us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost | 2,362us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost |
| Change in projected benefit obligation: | |||
| Projected benefit obligation at beginning of year | 19,730us-gaap_DefinedBenefitPlanBenefitObligation | 15,570us-gaap_DefinedBenefitPlanBenefitObligation | 16,221us-gaap_DefinedBenefitPlanBenefitObligation |
| Service cost | 1,393us-gaap_DefinedBenefitPlanServiceCost | 1,498us-gaap_DefinedBenefitPlanServiceCost | 1,367us-gaap_DefinedBenefitPlanServiceCost |
| Interest cost | 728us-gaap_DefinedBenefitPlanInterestCost | 603us-gaap_DefinedBenefitPlanInterestCost | 604us-gaap_DefinedBenefitPlanInterestCost |
| Actuarial gain (loss) | 2,689us-gaap_DefinedBenefitPlanActuarialGainLoss | (2,070)us-gaap_DefinedBenefitPlanActuarialGainLoss | 1,721us-gaap_DefinedBenefitPlanActuarialGainLoss |
| Direct benefit payments | (650)us-gaap_DefinedBenefitPlanBenefitsPaid | (682)us-gaap_DefinedBenefitPlanBenefitsPaid | (800)us-gaap_DefinedBenefitPlanBenefitsPaid |
| Projected benefit obligation at end of year | 15,570us-gaap_DefinedBenefitPlanBenefitObligation | 19,730us-gaap_DefinedBenefitPlanBenefitObligation | 15,570us-gaap_DefinedBenefitPlanBenefitObligation |
| Amounts recognized in the consolidated balance sheets: | |||
| Projected benefit obligation at beginning of year | 19,730us-gaap_DefinedBenefitPlanBenefitObligation | 15,570us-gaap_DefinedBenefitPlanBenefitObligation | 16,221us-gaap_DefinedBenefitPlanBenefitObligation |
| Amounts recognized in accumulated other comprehensive income (loss): | |||
| Prior service cost | (5,671)us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditAfterTax | (6,049)us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditAfterTax | (6,427)us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditAfterTax |
| Accumulated actuarial loss | (3,849)us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax | (1,160)us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax | (3,320)us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax |
| Accumulated other comprehensive income (loss) | $ (9,520)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax | $ (7,209)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax | $ (9,747)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax |
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- Definition
The total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
After tax net amount of gain (loss) that are not yet recognized as a component of net periodic benefit cost, and that are recognized as increases (decreases) in other comprehensive income as they arise. No definition available.
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- Definition
Amount after tax of cost (credit) due to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation, which has not yet been recognized as a component of net periodic benefit cost. No definition available.
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- Definition
Amount of gain (loss) related to change in benefit obligation resulting from changes in actuarial assumptions, for example, but not limited to, interest, mortality, employee turnover, salary, and temporary deviation from the substantive plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of gains or losses recognized in net periodic benefit cost. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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