Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 3 Months Ended
May 31, 2016
May 31, 2015
Operating activities    
Net income (loss) $ 2,784 $ (3,832)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:    
Depreciation, amortization and impairment expense 4,281 2,174
Stock-based compensation expense 7,937 6,544
Excess tax benefits from equity compensation plans (141) (2,144)
Deferred income taxes 261 145
Other (225) 337
Changes in operating assets and liabilities:    
Accounts receivable, net 1,015 (2,339)
Inventories, net (363) (263)
Income taxes, net 1,452 2,289
Deferred costs (26) (1,379)
Other assets (1,669) 283
Accounts payable (3,283) (3,113)
Accrued payroll and related benefits 69 (61)
Other liabilities (255) (352)
Deferred revenue 277 8,013
Net cash provided by operating activities 12,114 6,302
Investing activities    
Purchases of marketable securities (11,572) (8,493)
Proceeds from the sale of marketable securities 5,351 3,203
Proceeds from the maturity of marketable securities 3,831 3,026
Purchases of non-marketable investments 636 0
Purchases of property and equipment (1,949) (1,876)
Business combinations, net of cash acquired (183) 0
Net cash used in investing activities (5,158) (4,140)
Financing activities    
Proceeds from issuance of common stock 3,031 3,248
Taxes paid related to net share settlement of equity awards (1,554) (2,176)
Excess tax benefits from equity compensation plans 141 2,144
Employee loans extended, net of repayment (34) (276)
Repayment of note payable (67) (63)
Repurchases of common stock (280) 0
Other 0 (156)
Net cash provided by financing activities 1,237 2,721
Effect of exchange rate changes on cash and cash equivalents 135 (194)
Net increase in cash and cash equivalents 8,328 4,689
Cash and cash equivalents at beginning of period 118,654 151,373
Cash and cash equivalents at end of period $ 126,982 $ 156,062