Significant accounting policies	9 Months Ended
Sep. 30, 2017
Accounting Policies [Abstract]
Significant accounting policies	Significant accounting policies Share-based compensation The Company has adopted an equity incentive plan that provides for the grant of share options, share appreciation rights, restricted shares, share units, unrestricted shares, dividend equivalent rights, performance shares and other performance-based awards, other equity-based awards, and cash bonus awards. Share-based compensation is measured at the fair value of the award on the date of grant and recognized as an expense on a straight-line basis over the vesting period. For awards with market conditions, the conditions are incorporated into the fair value measurement and the compensation expense is not adjusted if the conditions are not met. For awards with performance conditions, compensation expense is recognized when it becomes probable that the performance criteria specified in the awards will be achieved and, accordingly, the compensation value is adjusted following the changes in the estimates of shares likely to vest based on the performance criteria. The determination of fair value of the market based awards on the date of grant is subjective and involves significant estimates and assumptions including expected volatility of the Company's shares, expected dividend yield, expected term and assumptions of whether these awards will achieve performance thresholds. The effects of forfeitures are recognized in compensation expense when they occur. Future Accounting Standards In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update ("ASU") No. 2014-09 (“ASU 2014-09”), Revenue from Contracts with Customers. The standard provides companies with a single model for use in accounting for revenue arising from contracts with customers and supersedes current revenue recognition guidance, including industry-specific revenue guidance. The core principle of the model is to recognize revenue when control of the goods or services transfers to the customer, as opposed to recognizing revenue when the risks and rewards transfer to the customer under the existing revenue guidance. ASU 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date, defers the effective date of ASU 2014-09 by one year to apply to annual reporting periods beginning after December 15, 2017, but the early adoption of this ASU is permitted. The guidance permits companies to either apply the requirements retrospectively to all prior periods presented, or apply the requirements in the year of adoption, through a cumulative adjustment. Based on our preliminary assessment of our revenue streams under the new standard, we do not expect the adoption of this standard to have a material impact on our consolidated financial statements and related disclosures. The performance obligations related to our package and non-package revenue streams are generally fully satisfied at the point that revenue is recognized due to the short-term day-to-day nature of these revenue streams. We currently expect to adopt ASU 2014-09 utilizing the modified retrospective transition method on January 1, 2018, noting that the cumulative adjustment applied in the year of adoption is expected to be immaterial. In March 2017, the FASB issued ASU No. 2017-07 ("ASU 2017-07"), Compensation-Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. Net periodic benefit cost is currently reported as an employee cost within operating income. ASU 2017-07 requires bifurcation of net benefit cost resulting in the service cost component being presented with other employee compensation costs in operating income. The other components will be reported separately outside of operations and will not be eligible for capitalization. The ASU is effective for annual periods beginning after December 15, 2017, including interim periods therein. We do not expect the implementation of ASU 2017-07 to have a material impact on our financial statements. All non-service cost components of our net periodic benefit cost will be presented retrospectively for all comparative periods within the consolidated statements of income as other income (expense), net instead of direct expense with no impact to overall net income. For purposes of evaluating the performance of our operating segments, all components of net periodic benefit cost will be included in the operating results of the resorts we own as we consider them to be ongoing costs of operations. Adopted accounting standards In March 2016, the FASB issued ASU No. 2016-09, Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, which is intended to simplify various aspects of accounting for share-based compensation arrangements, including the income tax impact, classification on the statement of cash flows and forfeitures. The new standard requires excess tax benefits and tax deficiencies to be recorded in the statements of income as a component of the provision for income taxes when stock awards vest or are settled. In addition, it eliminates the requirement to reclassify cash flows related to excess tax benefits from operating activities to financing activities on the consolidated statements of cash flows. The standard also provides an accounting policy election to account for forfeitures as they occur, allows us to withhold more of an employee’s vesting shares for tax withholding purposes without triggering liability accounting, and clarifies that all cash payments made to tax authorities on an employee’s behalf for withheld shares should be presented as a financing activity on our cash flows statement. We adopted this standard in the second quarter of 2017 in connection with our initial grant of restricted share awards. Upon adoption, excess tax benefits or deficiencies from share-based award activity are reflected in the consolidated statements of income as a component of the provision for income taxes. We also elected to account for forfeitures as they occur, rather than estimate expected forfeitures.

Significant accounting policies

Share-based compensation

The Company has adopted an equity incentive plan that provides for the grant of share options, share appreciation rights, restricted shares, share units, unrestricted shares, dividend equivalent rights, performance shares and other performance-based awards, other equity-based awards, and cash bonus awards. Share-based compensation is measured at the fair value of the award on the date of grant and recognized as an expense on a straight-line basis over the vesting period. For awards with market conditions, the conditions are incorporated into the fair value measurement and the compensation expense is not adjusted if the conditions are not met. For awards with performance conditions, compensation expense is recognized when it becomes probable that the performance criteria specified in the awards will be achieved and, accordingly, the compensation value is adjusted following the changes in the estimates of shares likely to vest based on the performance criteria. The determination of fair value of the market based awards on the date of grant is subjective and involves significant estimates and assumptions including expected volatility of the Company's shares, expected dividend yield, expected term and assumptions of whether these awards will achieve performance thresholds. The effects of forfeitures are recognized in compensation expense when they occur.

Future Accounting Standards

In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update ("ASU") No. 2014-09 (“ASU 2014-09”), Revenue from Contracts with Customers. The standard provides companies with a single model for use in accounting for revenue arising from contracts with customers and supersedes current revenue recognition guidance, including industry-specific revenue guidance. The core principle of the model is to recognize revenue when control of the goods or services transfers to the customer, as opposed to recognizing revenue when the risks and rewards transfer to the customer under the existing revenue guidance. ASU 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date, defers the effective date of ASU 2014-09 by one year to apply to annual reporting periods beginning after December 15, 2017, but the early adoption of this ASU is permitted. The guidance permits companies to either apply the requirements retrospectively to all prior periods presented, or apply the requirements in the year of adoption, through a cumulative adjustment. Based on our preliminary assessment of our revenue streams under the new standard, we do not expect the adoption of this standard to have a material impact on our consolidated financial statements and related disclosures. The performance obligations related to our package and non-package revenue streams are generally fully satisfied at the point that revenue is recognized due to the short-term day-to-day nature of these revenue streams. We currently expect to adopt ASU 2014-09 utilizing the modified retrospective transition method on January 1, 2018, noting that the cumulative adjustment applied in the year of adoption is expected to be immaterial.

In March 2017, the FASB issued ASU No. 2017-07 ("ASU 2017-07"), Compensation-Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. Net periodic benefit cost is currently reported as an employee cost within operating income. ASU 2017-07 requires bifurcation of net benefit cost resulting in the service cost component being presented with other employee compensation costs in operating income. The other components will be reported separately outside of operations and will not be eligible for capitalization. The ASU is effective for annual periods beginning after December 15, 2017, including interim periods therein. We do not expect the implementation of ASU 2017-07 to have a material impact on our financial statements. All non-service cost components of our net periodic benefit cost will be presented retrospectively for all comparative periods within the consolidated statements of income as other income (expense), net instead of direct expense with no impact to overall net income. For purposes of evaluating the performance of our operating segments, all components of net periodic benefit cost will be included in the operating results of the resorts we own as we consider them to be ongoing costs of operations.

Adopted accounting standards

In March 2016, the FASB issued ASU No. 2016-09, Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, which is intended to simplify various aspects of accounting for share-based compensation arrangements, including the income tax impact, classification on the statement of cash flows and forfeitures. The new standard requires excess tax benefits and tax deficiencies to be recorded in the statements of income as a component of the provision for income taxes when stock awards vest or are settled. In addition, it eliminates the requirement to reclassify cash flows related to excess tax benefits from operating activities to financing activities on the consolidated statements of cash flows. The standard also provides an accounting policy election to account for forfeitures as they occur, allows us to withhold more of an employee’s vesting shares for tax withholding purposes without triggering liability accounting, and clarifies that all cash payments made to tax authorities on an employee’s behalf for withheld shares should be presented as a financing activity on our cash flows statement. We adopted this standard in the second quarter of 2017 in connection with our initial grant of restricted share awards. Upon adoption, excess tax benefits or deficiencies from share-based award activity are reflected in the consolidated statements of income as a component of the provision for income taxes. We also elected to account for forfeitures as they occur, rather than estimate expected forfeitures.