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v3.19.2

Capital - Incentive and Share-based Compensation (Details) $ / shares in Units, $ in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
May 31, 2019 USD ($) shares | Mar. 31, 2019 USD ($) vesting_installment shares | Jun. 30, 2019 USD ($) shares | Jun. 30, 2018 USD ($) | Jun. 30, 2019 USD ($) $ / shares shares | Jun. 30, 2018 USD ($) | May 16, 2019 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Expected volatility rate look-back period (in years) |  |  |  |  | 6 years |  |
Weighted-average per unit or share fair value (in USD per share) | $ / shares |  |  |  |  | $ 9.55 |  |
Age of grantee at which LTIP unit and restricted stock awards immediately vest |  |  |  |  | 60 years |  |
Period of service, upon completion of which, grantee's LTIP unit and restricted stock awards will immediately vest (in years) |  |  |  |  | 10 years |  |
Awards that meet age and service requirements for vesting |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Noncash share-based compensation expense recognized | $ |  |  | $ 0.2 | $ 0.1 | $ 1.5 | $ 1.3 |
Unrecognized compensation expense | $ |  |  | 1.6 |  | $ 1.6 |  |
Unrecognized compensation expense, period for recognition |  |  |  |  | 2 years 6 months |  |
Awards that do not meet age and service requirements for vesting |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Noncash share-based compensation expense recognized | $ |  |  | 6.1 | $ 4.5 | $ 10.2 | $ 7.9 |
Unrecognized compensation expense | $ |  |  | $ 42.7 |  | $ 42.7 |  |
Unrecognized compensation expense, period for recognition |  |  |  |  | 2 years 6 months |  |
Long-Term Incentive Plan Units and Restricted Stock |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Fair value of share-based awards granted in period | $ |  |  |  |  | $ 27.9 |  |
Weighted-average per unit or share fair value (in USD per share) | $ / shares |  |  |  |  | $ 9.55 |  |
Dividend rate (as a percent) |  |  |  |  | 2.40% |  |
Risk free interest rate, minimum (as a percent) |  |  |  |  | 2.48% |  |
Risk free interest rate, maximum (as a percent) |  |  |  |  | 2.63% |  |
Expected price volatility, minimum (as a percent) |  |  |  |  | 17.00% |  |
Expected price volatility, maximum (as a percent) |  |  |  |  | 22.00% |  |
Time Based Long-Tern Incentive Plan Unit | 2013 Plan Units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares granted (in shares) | shares |  | 61,432 |  |  |  |  |
Fair value of share-based awards granted in period | $ |  | $ 2.0 |  |  |  |  |
Award vesting period |  | 4 years |  |  |  |  |
Number of vesting installments | vesting_installment |  | 3 |  |  |  |  |
Performance Based Long-Term Incentive Plan Unit | 2013 Plan Units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares granted (in shares) | shares |  | 113,383 |  |  |  |  |
Fair value of share-based awards granted in period | $ |  | $ 0.9 |  |  |  |  |
Award vesting period |  | 3 years |  |  |  |  |
Number of vesting installments | vesting_installment |  | 2 |  |  |  |  |
Time Restricted Shares | 2013 Plan Units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares granted (in shares) | shares |  | 69,358 |  |  |  |  |
Executive Officer | Time Based Long-Tern Incentive Plan Unit | 2013 Plan Units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares granted (in shares) | shares |  | 461,693 |  |  |  |  |
Fair value of share-based awards granted in period | $ |  | $ 6.4 |  |  |  |  |
Executive Officer | Time Based Long-Tern Incentive Plan Unit | 2013 Plan Units, connected with bonus program |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares granted (in shares) | shares |  | 334,952 |  |  |  |  |
Fair value of share-based awards granted in period | $ |  | $ 4.6 |  |  |  |  |
Award vesting period |  |  |  |  | 3 years |  |
Vesting percentage of award face amount |  |  | 125.00% |  | 125.00% |  |
Executive Officer | Time Based Long-Tern Incentive Plan Unit | Vesting immediately |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares granted (in shares) | shares |  | 26,056 |  |  |  |  |
Executive Officer | Time Based Long-Tern Incentive Plan Unit | Vest ratably over three years |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares granted (in shares) | shares |  | 308,896 |  |  |  |  |
Award vesting period |  | 3 years |  |  |  |  |
Executive Officer | Time Based Long-Tern Incentive Plan Unit | Vest in two equal annual installments |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Number of vesting installments | vesting_installment |  | 2 |  |  |  |  |
Executive Officer | Performance Based Long-Term Incentive Plan Unit | 2013 Plan Units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares granted (in shares) | shares |  | 1,806,520 |  |  |  |  |
Fair value of share-based awards granted in period | $ |  | $ 12.8 |  |  |  |  |
Director | Time Based Long-Tern Incentive Plan Unit | 2019 Plan Units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares granted (in shares) | shares | 70,746 |  |  |  |  |  |
Fair value of share-based awards granted in period | $ | $ 1.0 |  |  |  |  |  |
Award vesting period | 3 years |  |  |  |  |  |
2019 Plan |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Number of shares authorized under the plan (in shares) | shares |  |  | 11,000,000.0 |  | 11,000,000.0 |  | 11,000,000.0
Number of shares that remain available for future issuance (in shares) | shares |  |  | 10,900,000 |  | 10,900,000 |  |
Minimum | Long-Term Incentive Plan Units and Restricted Stock |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Expected term |  |  |  |  | 2 years |  |
Maximum | Long-Term Incentive Plan Units and Restricted Stock |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Expected term |  |  |  |  | 5 years 3 months 18 days |  |

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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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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). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition 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). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The estimated measure of the maximum 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. + References No definition available. + Details
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- Definition The estimated measure of the minimum 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. + References No definition available. + Details
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