Quarterly report pursuant to Section 13 or 15(d)

Stock-based Expense Narrative (Details)

v3.10.0.1
Stock-based Expense Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based expense $ (0.4) $ (0.2) $ (0.9) $ (0.2)
Performance-Based Restricted Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted shares of restricted stock (in shares)     517,364