Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation - Narrative (Details)

v3.7.0.1
Stock-Based Compensation - Narrative (Details)
9 Months Ended 12 Months Ended
Dec. 31, 2016
USD ($)
shares
Dec. 31, 2016
USD ($)
shares
Dec. 31, 2016
USD ($)
executive
shares
Apr. 30, 2016
shares
Apr. 01, 2016
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Expiration period     10 years    
Cash proceeds received from options exercised | $     $ 300,000    
Excess tax benefit | $     $ 300,000    
Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period     1 year    
Maximum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period     3 years    
Performance Share Awards (PSAs)          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of executives receiving incentive awards | executive     5    
Number of executives holding incentive awards at period end | executive     4    
Performance condition based on earnings before interest, taxes, depreciation and amortization     75.00%    
Performance condition based on cumulative free cash flow     25.00%    
Restricted Stock Units (RSUs)          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period     3 years    
Restricted stock units granted (in shares) 118,000        
Shares vested and distributed (in shares) 83,800        
Number of shares 362,800 362,800 362,800   363,400
Restricted Stock Units (RSUs) | Year One          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting percentage     33.33%    
Restricted Stock Units (RSUs) | Year Two          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting percentage     33.33%    
Restricted Stock Units (RSUs) | Year Three          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting percentage     33.33%    
Modified Awards          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Incremental compensation cost | $   $ 0      
Total unrecognized compensation expense | $ $ 1,500,000 $ 1,500,000 $ 1,500,000    
Weighted average period     1 year 1 month    
Modified Restricted Stock Units (RSUs) | Non-Employee Director          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares 93,428 93,428 93,428    
Modified Performance Share Units (PSUs)          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award requisite service period completed at modification     2 years    
Award requisite service period     3 years    
Performance Share Units that may be settled in cash          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares 3,369 3,369 3,369    
Restricted Stock Units that may be settled in cash          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares 7,646 7,646 7,646    
Performance Shares, Performance Share Units and Restricted Stock Units          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Total unrecognized compensation expense | $ $ 7,500,000 $ 7,500,000 $ 7,500,000    
Weighted average period     2 years    
2016 LTIP Plan | Performance Share Units (PSUs)          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Performance condition based on earnings before interest, taxes, depreciation and amortization     75.00%    
Performance condition based on cumulative free cash flow     25.00%    
2016 Directors' Plan | Restricted Stock Units (RSUs)          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period     1 year    
Shares vested and distributed (in shares)     6,899    
Number of shares 69,612 69,612 69,612    
2016 Directors' Plan | Restricted Stock Units (RSUs) | Non-Employee Director          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Restricted stock units granted (in shares)     76,511    
Common Stock | 2016 LTIP Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares authorized (in shares)       5,500,000  
Common Stock | 2016 Directors' Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares authorized (in shares)       600,000