CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Mar. 31, 2018
Current assets:
Cash and cash equivalents	$ 1,054,911	$ 808,973
Short-term investments	545,734	615,406
Restricted cash	240,584	437,398
Accounts receivable, net of allowances of $1,003 and $54,290 at December 31, 2018 and March 31, 2018, respectively	823,482	247,649
Inventory	39,786	15,162
Software development costs and licenses	33,542	33,284
Deferred cost of goods sold	57,280	117,851
Prepaid expenses and other	179,454	133,454
Total current assets	2,974,773	2,409,177
Fixed assets, net	114,672	102,478
Software development costs and licenses, net of current portion	597,497	639,369
Deferred cost of goods sold, net of current portion	7,819	26,719
Goodwill	383,110	399,530
Other intangibles, net	79,903	103,681
Deferred tax assets	146,216	4,930
Other assets	83,170	51,957
Total assets	4,387,160	3,737,841
Current liabilities:
Accounts payable	74,615	35,029
Accrued expenses and other current liabilities	1,206,332	914,748
Deferred revenue	818,411	777,152
Total current liabilities	2,099,358	1,726,929
Long-term debt	0	8,068
Non-current deferred revenue	69,137	355,589
Other long-term liabilities	191,198	158,285
Total liabilities	2,359,693	2,248,871
Commitments and contingencies (See Note 13)
Stockholders' equity:
Preferred stock, $.01 par value, 5,000 shares authorized; no shares issued and outstanding at December 31, 2018 and March 31, 2018	0	0
Common stock, $.01 par value, 200,000 shares authorized; 134,396 and 132,743 shares issued and 113,094 and 114,038 outstanding at December 31, 2018 and March 31, 2018, respectively	1,344	1,327
Additional paid-in capital	1,976,853	1,888,039
Treasury stock, at cost; 21,302 and 18,705 common shares at December 31, 2018 and March 31, 2018, respectively	(720,572)	(458,180)
Retained earnings	820,796	73,516
Accumulated other comprehensive loss	(50,954)	(15,732)
Total stockholders' equity	2,027,467	1,488,970
Total stockholders' equity	$ 4,387,160	$ 3,737,841