Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Mar. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Support, maintenance and subscription services	$ 16,667	$ 14,948
Income tax deductions in excess of recorded windfall tax benefits	$ 4,400
Accounting Standards Update 2016-09 | Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative adjustment to retained earnings			$ 700
Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Support, maintenance and subscription services		$ 400