CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Nov. 30, 2015	Feb. 28, 2015
Current assets:
Cash and cash equivalents	$ 106,678	$ 34,184
Short-term marketable securities	116,657	10,177
Accounts receivable, less allowance for doubtful accounts of $626 and $673 at November 30, 2015 and February 28, 2015, respectively	44,950	47,917
Inventories	18,103	18,666
Prepaid expenses and other current assets	3,818	5,110
Total current assets	290,206	116,054
Property, equipment and improvements, net of accumulated depreciation and amortization	11,285	10,525
Deferred income tax assets	27,740	34,822
Goodwill	16,508	15,483
Other intangible assets, net	18,660	22,596
Other assets	5,987	3,137
Total assets	370,386	202,617
Current liabilities:
Accounts payable	24,919	24,012
Accrued payroll and employee benefits	6,036	5,522
Deferred revenue	8,396	10,748
Other current liabilities	5,241	6,723
Total current liabilities	44,592	$ 47,005
1.625% Convertible senior unsecured notes	138,101
Other non-current liabilities	$ 5,866	$ 4,227
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; 36,575 and 36,225 shares issued and outstanding at November 30, 2015 and February 28, 2015, respectively	$ 366	$ 362
Additional paid-in capital	226,931	207,881
Accumulated deficit	(45,359)	(56,793)
Accumulated other comprehensive loss	(111)	(65)
Total stockholders' equity	181,827	151,385
Total Liabilities and Stockholders' Equity	$ 370,386	$ 202,617