CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Feb. 29, 2016	Feb. 28, 2015
Current assets:
Cash and cash equivalents	$ 139,388	$ 34,184
Short-term marketable securities	88,718	10,177
Accounts receivable, less allowance for doubtful accounts of $622 and $673 at February 28, 2016 and 2015, respectively	49,432	47,917
Inventories	16,731	18,666
Prepaid expenses and other current assets	4,498	5,110
Total current assets	298,767	116,054
Property, equipment and improvements, net of accumulated depreciation and amortization	11,225	10,525
Deferred income tax assets	30,213	34,822
Goodwill	16,508	15,483
Other intangible assets, net	17,010	22,596
Other assets	10,640	3,137
Total assets	384,363	202,617
Current liabilities:
Accounts payable	24,938	24,012
Accrued payroll and employee benefits	6,814	5,522
Deferred revenue	9,438	10,748
Other current liabilities	8,375	6,723
Total current liabilities	49,565	$ 47,005
1.625% convertible senior unsecured notes	139,800
Other non-current liabilities	5,551	$ 4,227
Total liabilities	$ 194,916	$ 51,232
Commitments and contingencies
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; 36,667 and 36,225 shares issued and outstanding at February 28, 2016 and 2015, respectively	$ 367	$ 362
Additional paid-in capital	229,159	207,881
Accumulated deficit	(39,853)	(56,793)
Accumulated other comprehensive loss	(226)	(65)
Total stockholders' equity	189,447	151,385
Total Liabilities and Stockholders' Equity	$ 384,363	$ 202,617