Annual report pursuant to Section 13 and 15(d)

Organization and Significant Accounting Policies Organization and Significant Accounting Policies - Advertising (Details)

v3.19.1
Organization and Significant Accounting Policies Organization and Significant Accounting Policies - Advertising (Details) - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2017
Advertising [Abstract]      
Advertising Expense $ 2.5 $ 2.4 $ 1.3