Taxation - Tax Rate Reconciliation (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2014 |
Sep. 30, 2014 |
Jun. 30, 2014 |
Mar. 31, 2014 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
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| Income Tax Disclosure [Abstract] | |||||||||||
| Income before income taxes | $ 126,322 | $ 103,697 | $ 104,719 | ||||||||
| Income tax expense | 2,038 | 2,164 | 1,863 | ||||||||
| Net income | $ 30,724 | $ 28,515 | $ 26,511 | $ 38,534 | $ 33,631 | $ 33,926 | $ 31,915 | $ 2,061 | $ 124,284 | $ 101,533 | $ 102,856 |
| Reconciliation of effective tax rate (% of income before income taxes) | |||||||||||
| Bermuda tax rate | 0.00% | 0.00% | 0.00% | ||||||||
| U.S. taxes at statutory rates | (2.20%) | (7.30%) | (8.70%) | ||||||||
| Valuation allowance in respect of U.S. taxes | 3.20% | 8.50% | 9.80% | ||||||||
| Other jurisdictions | 0.60% | 0.90% | 0.70% | ||||||||
| Actual tax rate | 1.60% | 2.10% | 1.80% | ||||||||
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- Definition Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Other than United States No definition available.
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- Definition Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, United States No definition available.
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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