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- Definition

Annualized Effective Compounded Return Rate

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No definition available.

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- Definition

The length of the performance period related to the Long Term Incentive performance-vesting shares.

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No definition available.

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The number of common shares considered probable of vesting as of the current quarter.

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No definition available.

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Percentage of bonus which is payable in cash.

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No definition available.

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Percentage of bonus which is payable in performance-vesting restricted shares based on the Company's achievement of performance goals

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No definition available.

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The percentage of total granted shares which can be earned at the end of each performance period.

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No definition available.

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- Definition

Return On Investment

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No definition available.

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The number of shares awarded during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Represents total shares that could be earned under the maximum performance level of achievement for all performance periods.

+ References

No definition available.

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Share based compensation arrangement by share based payment award performance period end date.

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No definition available.

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Share based compensation arrangement by share based payment award performance period start date.

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No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Aggregate number of common shares reserved for future issuance.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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- Definition

Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price).

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Description of award terms as to how many shares or portion of an award are no longer contingent on satisfaction of either a service condition, market condition or a performance condition, thereby giving the employee the legal right to convert the award to shares, to sell the shares, and be entitled to the cash proceeds of such sale. For example, vesting may be expressed as being 25 percent of the shares under option on each anniversary of the grant date.

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Percentage of vesting of share-based compensation awards.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Weighted average expected volatility rate of share-based compensation awards.

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

Net number of share options (or share units) granted during the period.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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No definition available.

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Equity-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 03, 2015	Jan. 15, 2015	Apr. 07, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total non-cash equity compensation expense	$ 1,853,000us-gaap_ShareBasedCompensation	$ 762,000us-gaap_ShareBasedCompensation
Bonus Performance Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted shares	420,004
Weighted average grant date fair value	$ 18.96
Long-Term Incentive Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	3,900,000
Vesting period	4 years
Vesting percentage	25.00%
Long-Term Incentive Options, expiration period	10 years
Options, exercise price	$ 18.96		$ 18.96
Fair value assumptions, expected life	6 years 3 months
Fair value assumptions, risk free rate	1.76%
Fair value assumptions, volatility	37.00%
Fair value assumptions, dividend yield	4.38%
Options, granted	903,270		903,270
Options, grant-date fair value			$ 4.39
Long-Term Incentive Performance Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted shares	75,832
Weighted average grant date fair value	$ 18.96
Time-Vesting Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted shares	383,054
Weighted average grant date fair value	$ 18.27
Time-Vesting Restricted Shares [Member] \| Interim Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted shares				100,000
Weighted average grant date fair value				$ 16.50
Vesting period, description	The earlier of the start date of a new Chief Executive Officer or June 30, 2015
Time-Vesting Restricted Shares [Member] \| Board Members [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted shares	14,772
Vesting period	3 years
2.25x Performance Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	30,000,000
Recognized compensation expense	0	0
Annualized effective compounded return rate	20.00%
Return on investment	2.25%
Additional future funds receive	10,000,000
2.75x Performance Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	18,000,000
Recognized compensation expense	0	0
Annualized effective compounded return rate	15.00%
Return on investment	2.75%
Additional future funds receive	438,000,000
Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance	15,000,000
Shares available for future issuance	12,582,874
Total non-cash equity compensation expense	1,853,000	762,000
Unrecognized compensation cost	11,100,000
2015 Bonus Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of bonus payable by cash	50.00%
2015 Bonus Plan [Member] \| Bonus Performance Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	8,000,000
Percentage of bonus payable by shares	50.00%
Granted shares			420,004
Weighted average grant date fair value			$ 18.96
Recognized compensation expense	0
2015 Long-Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares earned, percentage	33.00%
2015 Long-Term Incentive Plan [Member] \| Below Threshold Performance [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	0.00%
2015 Long-Term Incentive Plan [Member] \| Threshold Performance [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	50.00%
2015 Long-Term Incentive Plan [Member] \| Target Performance [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	100.00%
2015 Long-Term Incentive Plan [Member] \| At or Above Maximum Performance [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	200.00%
2015 Long-Term Incentive Plan [Member] \| Long-Term Incentive Time Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	5,000,000
Granted shares			268,282
Weighted average grant date fair value			$ 18.96
Vesting period	4 years
Vesting percentage	25.00%
2015 Long-Term Incentive Plan [Member] \| Long-Term Incentive Performance Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value			$ 18.96
Performance period, beginning date	Jan. 01, 2015
Performance period, ending date	Dec. 31, 2017
Performance period	3 years
Awarded shares			227,526
Number of shares probable of vesting related to the first performance period	37,916
2015 Long-Term Incentive Plan [Member] \| Long-Term Incentive Performance Restricted Shares [Member] \| Target Performance [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	700,000
2015 Long-Term Incentive Plan [Member] \| Long-Term Incentive Performance Restricted Shares [Member] \| Maximum Performance [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 740,000
2015 Long-Term Incentive Plan [Member] \| Long-Term Incentive Performance Restricted Shares [Member] \| First Performance Level [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted shares			75,832
Other 2015 Grants [Member] \| Chief Executive Officer [Member] \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value assumptions, expected life					6 years 3 months
Fair value assumptions, risk free rate					1.53%
Fair value assumptions, volatility					36.40%
Fair value assumptions, dividend yield					4.20%
Other 2015 Grants [Member] \| Bonus Performance Restricted Shares [Member] \| Chief Executive Officer [Member] \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted shares					27,623
Weighted average grant date fair value					20.01
Other 2015 Grants [Member] \| Time-Vesting Restricted Shares [Member] \| Chief Executive Officer [Member] \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted shares					249,875
Weighted average grant date fair value					20.01
Vesting period					4 years
Other 2015 Grants [Member] \| Nonqualified Stock Options [Member] \| Chief Executive Officer [Member] \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					4 years
Options, exercise price					20.01
Options, granted					1,089,324
Options, grant-date fair value					4.59