Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Mar. 31, 2016
Current assets:
Cash and cash equivalents	$ 304,880	$ 210,711
Marketable securities	137,892	128,003
Accounts receivable and unbilled costs, net of allowance for doubtful accounts of $2,066 and $5,069 at March 31, 2017 and 2016, respectively	294,374	247,199
Inventories and deferred costs	40,002	58,029
Prepaid income taxes	40,346	18,137
Prepaid expenses and other current assets (related party balances of $3,585 and $44,161 at March 31, 2017 and 2016, respectively)	36,972	78,399
Total current assets	854,466	740,478
Fixed assets, net	61,393	62,033
Goodwill	1,718,162	1,709,369
Intangible assets, net	931,269	1,054,040
Deferred income taxes	6,580	6,206
Long-term marketable securities	21,933	13,361
Other assets	7,710	7,356
Total assets	3,601,513	3,592,843
Current liabilities:
Accounts payable (related party balances of $444 and $5,893 at March 31, 2017 and 2016, respectively)	37,407	43,969
Accrued compensation	77,607	82,303
Accrued other	29,522	32,045
Income taxes payable	5,057	2,091
Deferred revenue and customer deposits	310,594	296,648
Total current liabilities	460,187	457,056
Other long-term liabilities	3,976	2,903
Deferred tax liability	277,599	285,359
Accrued long-term retirement benefits	32,117	31,378
Long-term deferred revenue and customer deposits	86,595	68,129
Long-term debt	300,000	300,000
Contingent liabilities, net of current portion	4,789	4,636
Total liabilities	1,165,263	1,149,461
Commitments and contingencies (Note 18)
Stockholders’ equity:
Preferred stock, $0.001 par value: 5,000,000 shares authorized; no shares issued or outstanding at March 31, 2017 and 2016	0	0
Common stock, $0.001 par value: 300,000,000 and 150,000,000 shares authorized; 115,917,431 and 114,495,614 shares issued and 92,041,288 and 94,088,469 shares outstanding at March 31, 2017 and 2016, respectively	116	114
Additional paid-in capital	2,693,846	2,642,745
Accumulated other comprehensive loss	(3,472)	(1,501)
Treasury stock at cost, 23,876,143 and 20,407,145 shares at March 31, 2017 and 2016, respectively	(570,921)	(481,366)
Retained earnings	316,681	283,390
Total stockholders’ equity	2,436,250	2,443,382
Total liabilities and stockholders’ equity	$ 3,601,513	$ 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.