CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Aug. 31, 2018	Feb. 28, 2018
Current assets:
Cash and cash equivalents	$ 273,972	$ 132,603
Short-term marketable securities	31,026	23,400
Accounts receivable, net	70,981	71,580
Inventories	31,194	36,302
Prepaid expenses and other current assets	14,482	12,000
Total current assets	421,655	275,885
Property and equipment, net	22,405	21,262
Deferred income tax assets	21,421	31,581
Goodwill	73,284	72,980
Other intangible assets, net	46,385	52,456
Other assets	25,773	18,829
Total assets	610,923	472,993
Current liabilities:
Accounts payable	36,159	35,478
Accrued payroll and employee benefits	7,544	10,606
Deferred revenue	20,683	17,757
Other current liabilities	31,621	31,688
Total current liabilities	96,007	95,529
Convertible senior unsecured notes, net	268,980	154,299
Other non-current liabilities	36,200	24,249
Total liabilities	401,187	274,077
Commitments and contingencies (see Note 16)
Stockholders' equity:
Preferred stock, $.01 par value; 3,000 shares authorized; no shares issued or outstanding
Common stock, $.01 par value; 80,000 shares authorized; 34,758 and 35,718 shares issued and outstanding at August 31, 2018 and February 28, 2018, respectively	348	357
Additional paid-in capital	222,981	218,217
Accumulated deficit	(12,963)	(19,459)
Accumulated other comprehensive loss	(630)	(199)
Total stockholders' equity	209,736	198,916
Total Liabilities and Stockholders' Equity	$ 610,923	$ 472,993