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Equity-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Jun. 30, 2015 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Market price of common stock, per share |  |  |  | $ 33.00 |  |  |
Unrecognized compensation cost |  |  |  | $ 9.2 |  |  |
Weighted average cost recognition period, in years |  |  |  | 2 years 1 day |  |  |
Accrued equity based compensation |  |  |  | $ 48.0 | $ 45.5 |  |
Maximum |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Typical vesting period, in years |  |  |  | 4 years |  |  |
Performance stock units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Typical vesting period, in years |  |  |  | 3 years |  |  |
Shares awarded (in shares) |  |  |  | 108,748 | 0 | 396,714 |
Award performance period |  |  |  | 1 year |  |  |
Forfeited in period (in shares) |  |  |  | 25,000 |  |  |
Performance stock units outstanding (in shares) |  |  |  | 480,462 | 396,714 |  |
Equity Based Compensation Percent Of Targeted Performance Stock Units Earned |  |  |  | 200.00% | 200.00% |  |
Units vested (in shares) |  |  |  | 256,000 | 438,000 |  |
Number of days trailing for closing price |  |  |  |  |  |  | 90 days
2015 Equity Incentive Plan |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Number of shares available for issuance under the Plan |  |  |  | 354,000 |  |  |
2015 Equity Incentive Plan | Performance stock units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares awarded (in shares) | 75,000 | 321,714 |  |  |  |  |
Award performance period | 3 years |  |  |  |  |  |
Performance stock units outstanding (in shares) |  |  |  | 50,000 |  |  |
Non-Employee Directors Plan |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Number of shares available for issuance under the Plan |  |  |  | 73,000 |  |  |
June 2015 | 2015 Equity Incentive Plan | Performance stock units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Forfeited in period (in shares) |  |  |  | 25,000 |  |  |
Based on actual return on invested capital | February 2017 | Performance stock units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares awarded (in shares) |  |  |  | 78,482 |  |  |
Based on actual return on invested capital | April 2017 | Performance stock units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares awarded (in shares) |  |  |  | 5,266 |  |  |
Based on total shareholder return vs S&P Small Cap Industrial Sector | February and April 2017 | Performance stock units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares awarded (in shares) |  |  |  | 25,000 |  |  |
Non Current Liabilities |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Accrued equity based compensation |  |  |  | $ 29.3 | $ 40.2 |  |
Scenario, Forecast | 2015 Equity Incentive Plan | Performance stock units |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares awarded (in shares) |  |  | 321,714 |  |  |  |

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- Definition Unrecognized cost of unvested share-based compensation awards. + 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=96867065&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://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=96867065&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=96867065&loc=d3e5070-113901 + Details
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