Intangible Assets - Intangible Assets, Other than Capitalized Software Development Costs (Details) - USD ($)	Dec. 31, 2017	Mar. 31, 2017
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	$ 152,640	$ 123,840
Accumulated amortization	(71,977)	(54,627)
Net intangible assets	80,663	69,213
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	54,450	50,550
Accumulated amortization	(33,955)	(28,972)
Net intangible assets	20,495	21,578
Trade Name & Contracts [Member]
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	7,080	5,480
Accumulated amortization	(3,118)	(2,088)
Net intangible assets	3,962	3,392
Computer Software, Intangible Asset
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	91,110	67,810
Accumulated amortization	(34,904)	(23,567)
Net intangible assets	$ 56,206	$ 44,243