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Software Development Costs, Net (Details Textual) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Sep. 30, 2018
Research and Development [Abstract]          
Payments to develop software $ 3.7 $ 4.4 $ 7.4 $ 8.8  
Internal use software 1.0   1.0   $ 1.3
Software costs amortized 3.9 4.4 8.0 9.0  
Net realizable value software costs $ 0.0 $ 0.0 $ 0.0 $ 0.3  
Remaining amortization period 3 years 1 month 6 days 3 years 2 months 12 days 3 years 1 month 6 days 3 years 2 months 12 days