Business Combinations - Additional Information (Details) - USD ($) $ in Thousands				6 Months Ended
	Jan. 31, 2018	Aug. 16, 2017	Apr. 14, 2017	Sep. 30, 2018
Inforth Technologies, LLC
Business Acquisition [Line Items]
Business acquisition, effective date of acquisition				Jan. 31, 2018
Business acquisition, date of acquisition agreement				Jan. 31, 2018
Total preliminary purchase price	$ 4,337
Finite-lived intangible assets acquired	$ 3,200
Inforth Technologies, LLC | Computer Software, Intangible Asset
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life	5 years
EagleDream Health
Business Acquisition [Line Items]
Business acquisition, effective date of acquisition				Aug. 16, 2017
Business acquisition, date of acquisition agreement				Jul. 31, 2017
Total preliminary purchase price		$ 25,609
Finite-lived intangible assets acquired		$ 13,400
Acquired finite-lived intangible assets, weighted average useful life		5 years 1 month 6 days
EagleDream Health | Computer Software, Intangible Asset
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life		5 years
EagleDream Health | Customer Relationships
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life		8 years
Entrada
Business Acquisition [Line Items]
Business acquisition, effective date of acquisition				Apr. 14, 2017
Business acquisition, date of acquisition agreement				Apr. 11, 2017
Total preliminary purchase price			$ 33,958
Finite-lived intangible assets acquired			$ 15,400
Acquired finite-lived intangible assets, weighted average useful life			6 years 1 month 6 days
Entrada | Computer Software, Intangible Asset
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life			5 years
Entrada | Customer Relationships
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life			10 years
Entrada | Trade Names
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life			5 years