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Software Development Costs (Narrative) (Details) - Software Development - USD ($)
$ in Millions
3 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Mar. 31, 2016
Software costs capitalized during the period $ 1.0 $ 0.5  
Total capitalized software costs 4.7    
Accumulated software costs amortization 0.4   $ 0.2
Property and equipment 1.5   1.2
Long-term assets charged to other assets $ 3.2   $ 2.5