Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017
Current assets:
Cash and cash equivalents	$ 261,736	$ 304,880
Marketable securities	138,719	137,892
Accounts receivable and unbilled costs, net of allowance for doubtful accounts of $1,186 and $2,066 at June 30, 2017 and March 31, 2017, respectively	185,881	294,374
Inventories and deferred costs	41,013	40,002
Prepaid income taxes	48,523	40,346
Prepaid expenses and other current assets (related party balances of $3,604 and $3,585 at June 30, 2017 and March 31, 2017, respectively)	29,026	36,972
Total current assets	704,898	854,466
Fixed assets, net	60,269	61,393
Goodwill	1,715,512	1,718,162
Intangible assets, net	906,345	931,269
Deferred income taxes	5,477	6,580
Long-term marketable securities	9,195	21,933
Other assets	8,134	7,710
Total assets	3,409,830	3,601,513
Current liabilities:
Accounts payable (related party balances of $422 and $444 at June 30, 2017 and March 31, 2017, respectively)	30,551	37,407
Accrued compensation	61,242	77,607
Accrued other	25,908	29,522
Income taxes payable	5,057	5,057
Deferred revenue and customer deposits	279,489	310,594
Total current liabilities	402,247	460,187
Other long-term liabilities	4,340	3,976
Deferred tax liability	268,364	277,599
Accrued long-term retirement benefits	33,301	32,117
Long-term deferred revenue and customer deposits	79,232	86,595
Long-term debt	300,000	300,000
Contingent liabilities	4,827	4,789
Total liabilities	1,092,311	1,165,263
Commitments and contingencies (Note 12)
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000,000 shares authorized; no shares issued or outstanding at June 30, 2017 and March 31, 2017	0	0
Common stock, $0.001 par value, 300,000,000 shares authorized; 116,342,146 and 115,917,431 shares issued and 89,538,391 and 92,041,288 shares outstanding at June 30, 2017 and March 31, 2017, respectively	116	116
Additional paid-in capital	2,703,275	2,693,846
Accumulated other comprehensive loss	(2,029)	(3,472)
Treasury stock at cost, 26,803,755 and 23,876,143 shares at June 30, 2017 and March 31, 2017, respectively	(676,302)	(570,921)
Retained earnings	292,459	316,681
Total stockholders’ equity	2,317,519	2,436,250
Total liabilities and stockholders’ equity	$ 3,409,830	$ 3,601,513

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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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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.