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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