Quarterly report pursuant to Section 13 or 15(d)

Basis of Financial Statement Presentation - Contract Liabilities (Details)

v3.10.0.1
Basis of Financial Statement Presentation - Contract Liabilities (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Mar. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Contracts with customers, revenues recognized $ 0.1 $ 0.1 $ 0.1  
Capitalized contract costs 1.9   $ 1.9 $ 2.2
Capitalized contract cost, amortization $ 0.2 $ 0.2