Business Combinations and Dispositions (Details) - USD ($) $ in Thousands	Aug. 16, 2017	Apr. 14, 2017	Sep. 30, 2017	Mar. 31, 2017
Business Acquisition [Line Items]
Goodwill			$ 216,530	$ 185,898
Entrada [Member]
Business Acquisition [Line Items]
Initial purchase price		$ 34,000
Preliminary working capital and other adjustments		(42)
Acquired cash and cash equivalents		102
Accounts receivable, net		1,835
Prepaid expense and other current assets		145
Property, plant and equipment		134
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Capitalized Software		364
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets		1,041
Accrued compensation and related benefits		(639)
Other liabilities		(120)
Deferred revenues		(234)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other		(444)
Total preliminary net tangible assets acquired and liabilities assumed		2,184
Goodwill		16,374
Total preliminary identifiable intangible assets acquired		31,774
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
Business Combination, Consideration Transferred		$ 33,958
Entrada [Member] | Computer Software, Intangible Asset [Member]
Business Acquisition [Line Items]
Intangible assets		$ 10,500
Finite-Lived Intangible Asset, Useful Life		5 years
Entrada [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets		$ 3,300
Finite-Lived Intangible Asset, Useful Life		10 years
Entrada [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Intangible assets		$ 1,600
Finite-Lived Intangible Asset, Useful Life		5 years
EagleDreamHealth [Member]
Business Acquisition [Line Items]
Initial purchase price	$ 26,000
Preliminary working capital and other adjustments	(391)
Acquired cash and cash equivalents	573
Accounts receivable, net	217
Prepaid expense and other current assets	20
Accrued compensation and related benefits	(115)
Other liabilities	(271)
Deferred revenues	(394)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities	(1,957)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	(122)
Total preliminary net tangible assets acquired and liabilities assumed	(2,049)
Goodwill	14,258
Total preliminary identifiable intangible assets acquired	27,658
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
Business Combination, Consideration Transferred	$ 25,609
EagleDreamHealth [Member] | Computer Software, Intangible Asset [Member]
Business Acquisition [Line Items]
Intangible assets	$ 12,800
Finite-Lived Intangible Asset, Useful Life	5 years
EagleDreamHealth [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets	$ 600
Finite-Lived Intangible Asset, Useful Life	8 years