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Equity-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2016 | Dec. 31, 2015 | Jun. 30, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Number of shares available for issuance under the Plan |  |  |  | 550,000 |  |  |
Non-employee directors plan awards |  |  |  | 85,000 |  |  |
Granted (in shares) |  |  |  | 0 | 37,500 | 0 |
Market price of common stock, per share |  |  |  | $ 41.65 |  |  |
Unrecognized compensation cost |  |  |  | $ 9,957 |  |  |
Weighted average cost recognition period, in years |  |  |  | 2 years 2 months 1 day |  |  |
Management Stock Purchase Plan |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Restricted stock units credited |  |  |  | $ 3,137 | $ 1,901 | $ 2,120 |
Minimum |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Typical vesting period, in years |  |  |  | 1 year |  |  |
Maximum |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Typical vesting period, in years |  |  |  | 4 years |  |  |
Performance Shares |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Units Earned and Convertible to Cash |  |  |  | 128,000 | 219,000 | 231,000 | 114,000
Typical vesting period, in years |  |  |  | 3 years |  |  |
Award performance period |  |  |  | 1 year |  |  |
Performance stock units outstanding |  | 396,714 |  | 396,714 | 396,714 |  |
Shares awarded |  |  |  | 0 | 396,714 | 0 |
Weighted average fair value of per unit awarded (in USD per share) |  |  |  | $ 0.00 | $ 19.78 | $ 0 |
Percentage earned on target shares |  |  |  |  |  |  | 50.00%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares |  |  |  | 256,000 | 438,000 |  |
Units earned based on target units |  |  |  |  |  |  | 237,000
Equity Based Compensation Percent Of Targeted Performance Stock Units Earned |  |  |  | 200.00% | 200.00% |  |
Restricted stock units credited | $ 2,723 |  |  |  |  |  |
Number of days trailing for closing price |  |  |  |  |  |  | 90 days
2015 Equity Incentive Plan | Performance Shares |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Award performance period |  | 3 years |  |  |  |  |
Shares awarded |  | 75,000 | 321,714 |  |  |  |

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&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://www.xbrl.org/2003/role/presentationRef -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=6415400&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://www.xbrl.org/2003/role/presentationRef -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=6415400&loc=d3e5070-113901 + Details
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- Definition Amount of cash paid related to share-based compensation liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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