Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net income (loss)	$ (246)	$ 22,709
Adjustments to reconcile net income (loss) to cash provided by operating activities, net of the effects of acquisitions:
Depreciation and amortization	51,797	9,753
Loss on disposal of fixed assets	222	0
Deal related compensation expense and accretion charges	6,652	76
Share-based compensation expense associated with equity awards	12,098	7,797
Net change in fair value of contingent and contractual liabilities	0	(9)
Deferred income taxes	4,166	1,760
Other losses	61	85
Changes in assets and liabilities
Accounts receivable	52,695	10,684
Due from related party	(28,878)	0
Inventories	7,168	(2,871)
Prepaid expenses and other assets	(36,751)	(3,367)
Accounts payable	(5,012)	(1,226)
Accrued compensation and other expenses	11,855	672
Due to related party	7,513	0
Income taxes payable	(107)	(791)
Deferred revenue	(76,290)	(16,282)
Net cash provided by operating activities	6,943	28,990
Cash flows from investing activities:
Purchase of marketable securities	(41,544)	(57,790)
Proceeds from maturity of marketable securities	65,720	36,204
Purchase of fixed assets	(9,113)	(4,016)
Purchase of intangible assets	(152)	(92)
(Increase) decrease in deposits	(1)	101
Acquisition of businesses, net of cash acquired	27,748	0
Net cash provided by (used in) investing activities	42,658	(25,593)
Cash flows from financing activities:
Issuance of common stock under stock plans	1	67
Treasury stock repurchases	(184,995)	(30,894)
Proceeds from issuance of long-term debt, net of issuance costs	244,623	0
Excess tax benefit from share-based compensation awards	1,699	4,033
Net cash provided by (used in) financing activities	61,328	(26,794)
Effect of exchange rate changes on cash and cash equivalents	(283)	307
Net increase (decrease) in cash and cash equivalents	110,646	(23,090)
Cash and cash equivalents, beginning of period	104,893	102,076
Cash and cash equivalents, end of period	215,539	78,986
Non-cash transactions:
Transfers of inventory to fixed assets	1,688	940
Additions to property, plant and equipment included in accounts payable	31	120
Debt issuance costs settled through the issuance of additional debt	5,377	0
Gross decrease in contractual liability relating to fair value adjustment	0	(49)
Gross increase in contingent consideration liability relating to fair value adjustment	0	40
Issuance of common stock under employee stock plans	3,028	2,760
Purchase consideration
Non-cash transactions:
Noncash business transaction	2,279,910	0
Contingently Returnable Consideration
Non-cash transactions:
Noncash business transaction	$ 25,701	$ 0