Deferred Commissions (Details) - USD ($)	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Mar. 31, 2019
Revenue from Contract with Customer [Abstract]
Capitalized contract cost	$ 55,600,000		$ 53,400,000
Capitalized contract cost, amortization	7,600,000	$ 7,400,000
Costs expensed as incurred	1,900,000	1,500,000
Contract asset impairment	$ 0	$ 0