Fair Value Measurements (Details) - USD ($) $ in Thousands		12 Months Ended
		Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015	Jun. 30, 2015
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Change in fair value of contingent consideration		$ 4,247	$ 261	$ 1,937
LIABILITIES
Fair value of contingent consideration		18,817	24,153
Fair Value, Measurements, Recurring [Member]
ASSETS
Cash and cash equivalents	[1]	37,673	27,176
Restricted cash and cash equivalents	[1]	4,916	5,320
Marketable securities	[1]		9,297
Total	[1]	42,589	41,793
LIABILITIES
Fair value of contingent consideration	[1]	18,817	23,843
Total	[1]	18,817	23,843
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member]
ASSETS
Cash and cash equivalents	[1]	37,673	27,176
Restricted cash and cash equivalents		4,916	5,320
Marketable securities	[2]		9,297
Total		42,589	41,793
LIABILITIES
Fair value of contingent consideration		0	0
Total		0	0
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member]
ASSETS
Cash and cash equivalents	[1]	0	0
Restricted cash and cash equivalents		0	0
Marketable securities	[2]		0
Total		0	0
LIABILITIES
Fair value of contingent consideration		18,817	0
Total		18,817	0
Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member]
ASSETS
Cash and cash equivalents	[1]	0	0
Restricted cash and cash equivalents		0	0
Marketable securities	[2]		0
Total		0	0
LIABILITIES
Fair value of contingent consideration		0	23,843
Total		0	$ 23,843
HealthFusion [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Change in fair value of contingent consideration		3,817
Mirth [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Change in fair value of contingent consideration		$ 430
LIABILITIES
Fair value of contingent consideration					$ 16,700

[1] Cash equivalents consist primarily of money market funds.

[2] Marketable securities consist of available-for-sale money market instruments and fixed-income securities, including certificates of deposit, corporate bonds and notes, and municipal securities.