Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Mar. 31, 2016
Current assets:
Cash and cash equivalents	$ 195,423	$ 210,711
Marketable securities	99,297	128,003
Accounts receivable and unbilled costs, net of allowance for doubtful accounts of $6,838 and $5,069 at September 30, 2016 and March 31, 2016, respectively	240,599	247,199
Inventories and deferred costs	52,860	58,029
Prepaid income taxes	34,435	18,137
Prepaid expenses and other current assets (related party balances of $17,513 and $44,161 at September 30, 2016 and March 31, 2016, respectively)	42,444	78,399
Total current assets	665,058	740,478
Fixed assets, net	64,003	62,033
Goodwill	1,714,539	1,709,369
Intangible assets, net	998,169	1,054,040
Deferred income taxes	3,263	6,206
Long-term marketable securities	8,675	13,361
Other assets	6,078	7,356
Total assets	3,459,785	3,592,843
Current liabilities:
Accounts payable (related party balances of $4,569 and $5,893 at September 30, 2016 and March 31, 2016, respectively)	45,853	43,969
Accrued compensation	65,226	82,303
Accrued other	29,454	32,045
Income taxes payable	0	2,091
Deferred revenue and customer deposits	282,045	296,648
Total current liabilities	422,578	457,056
Other long-term liabilities	3,224	2,903
Deferred tax liability	259,625	285,359
Accrued long-term retirement benefits	31,493	31,378
Long-term deferred revenue and customer deposits	64,201	68,129
Long-term debt	300,000	300,000
Contingent liabilities	4,712	4,636
Total liabilities	1,085,833	1,149,461
Commitments and contingencies (Note 12)
Preferred stock, $0.001 par value:
5,000,000 shares authorized; no shares issued or outstanding at September 30, 2016 and March 31, 2016	0	0
Common stock, $0.001 par value:
300,000,000 and 150,000,000 shares authorized; 115,416,135 and 114,495,614 shares issued and 91,752,414 and 94,088,469 shares outstanding at September 30, 2016 and March 31, 2016, respectively	115	114
Additional paid-in capital	2,666,997	2,642,745
Accumulated other comprehensive loss	(1,705)	(1,501)
Treasury stock at cost, 23,663,721 and 20,407,145 shares at September 30, 2016 and March 31, 2016, respectively	(564,581)	(481,366)
Retained earnings	273,126	283,390
Total stockholders’ equity	2,373,952	2,443,382
Total liabilities and stockholders’ equity	$ 3,459,785	$ 3,592,843

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Balance Type:	credit
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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.