Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Mar. 31, 2017
Current assets:
Cash and cash equivalents	$ 251,505	$ 304,880
Marketable securities	55,582	137,892
Accounts receivable and unbilled costs, net of allowance for doubtful accounts of $1,689 and $2,066 at September 30, 2017 and March 31, 2017, respectively	215,227	294,374
Inventories and deferred costs	36,956	40,002
Prepaid income taxes	48,563	40,346
Prepaid expenses and other current assets (related party balances of $3,082 and $3,585 at September 30, 2017 and March 31, 2017, respectively)	29,043	36,972
Total current assets	636,876	854,466
Fixed assets, net	57,413	61,393
Goodwill	1,715,861	1,718,162
Intangible assets, net	887,974	931,269
Deferred income taxes	5,590	6,580
Long-term marketable securities	6,292	21,933
Other assets	7,919	7,710
Total assets	3,317,925	3,601,513
Current liabilities:
Accounts payable (related party balances of $612 and $444 at September 30, 2017 and March 31, 2017, respectively)	30,128	37,407
Accrued compensation	62,776	77,607
Accrued other	28,881	29,522
Income taxes payable	6,263	5,057
Deferred revenue and customer deposits	269,644	310,594
Total current liabilities	397,692	460,187
Other long-term liabilities	5,432	3,976
Deferred tax liability	260,371	277,599
Accrued long-term retirement benefits	35,548	32,117
Long-term deferred revenue and customer deposits	81,660	86,595
Long-term debt	300,000	300,000
Contingent liabilities	4,865	4,789
Total liabilities	1,085,568	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 September 30, 2017 and March 31, 2017	0	0
Common stock, $0.001 par value, 300,000,000 shares authorized; 117,137,727 and 115,917,431 shares issued and 87,140,939 and 92,041,288 shares outstanding at September 30, 2017 and March 31, 2017, respectively	116	116
Additional paid-in capital	2,723,693	2,693,846
Accumulated other comprehensive loss	505	(3,472)
Treasury stock at cost, 29,996,788 and 23,876,143 shares at September 30, 2017 and March 31, 2017, respectively	(781,948)	(570,921)
Retained earnings	289,991	316,681
Total stockholders' equity	2,232,357	2,436,250
Total liabilities and stockholders' equity	$ 3,317,925	$ 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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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.