Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net income (loss)	$ (24,753)	$ 40,338
Adjustments to reconcile net income (loss) to cash provided by operating activities, net of the effects of acquisitions:
Depreciation and amortization	97,668	14,449
Loss on disposal of fixed assets	131	536
Deal related compensation expense and accretion charges	6,690	114
Share-based compensation expense associated with equity awards	20,400	11,947
Net change in fair value of contingent and contractual liabilities	0	(9)
Deferred income taxes	6,981	2,151
Other losses	8	84
Changes in assets and liabilities
Accounts receivable and unbilled costs	(26,534)	(22,973)
Due from related party	(5,777)	0
Inventories	5,167	1,359
Prepaid expenses and other assets	(36,343)	(143)
Accounts payable	13,670	(700)
Accrued compensation and other expenses	35,236	10,132
Due to related party	(4,329)	0
Income taxes payable	(107)	(791)
Deferred revenue	(31,510)	828
Net cash provided by operating activities	56,598	57,322
Cash flows from investing activities:
Purchase of marketable securities	(74,667)	(78,547)
Proceeds from maturity of marketable securities	88,852	61,189
Purchase of fixed assets	(14,007)	(8,630)
Purchase of intangible assets	(154)	(131)
(Increase) decrease in deposits	(25)	103
Acquisition of businesses, net of cash acquired	27,701	0
Collection of contingently returnable consideration	8,750	0
Capitalized software development costs	(1,148)	0
Net cash provided by (used in) investing activities	35,302	(26,016)
Cash flows from financing activities:
Issuance of common stock under stock plans	1	105
Treasury stock repurchases	(212,426)	(31,543)
Proceeds from issuance of long-term debt, net of issuance costs	244,623	0
Excess tax benefit from share-based compensation awards	1,786	4,322
Net cash provided by (used in) financing activities	33,984	(27,116)
Effect of exchange rate changes on cash and cash equivalents	(256)	438
Net increase in cash and cash equivalents	125,628	4,628
Cash and cash equivalents, beginning of period	104,893	102,076
Cash and cash equivalents, end of period	230,521	106,704
Non-cash transactions:
Transfers of inventory to fixed assets	1,855	940
Additions to property, plant and equipment included in accounts payable	316	380
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
Gross increase in contingently returnable consideration asset relating to fair value adjustment	(3,676)	0
Issuance of common stock under employee stock plans	3,028	2,760
Purchase consideration
Non-cash transactions:
Noncash business transaction	2,276,235	0
Contingently Returnable Consideration
Non-cash transactions:
Noncash business transaction	$ 29,376	$ 0