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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
12 Months Ended
Feb. 28, 2019
Feb. 28, 2018
Feb. 28, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:      
Net income (loss) $ 18,398 $ 16,617 $ (7,904)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:      
Depreciation 8,580 7,968 8,408
Intangible asset amortization 11,436 14,989 15,061
Stock-based compensation expense 11,029 9,298 7,833
Amortization of convertible debt issue costs and discount 11,492 7,472 7,027
Loss on extinguishment of debt 2,033    
Tax benefits on vested and exercised equity awards 758 937  
Deferred tax assets, net (1,244) 6,372 (2,735)
Unrealized foreign currency transaction gains (loss) 404 (524)  
Impairment loss and equity in net loss of affiliate 6,787 1,411 1,284
Impairment of internal use software     1,364
Changes in operating assets and liabilities, excluding effects from acquisitions:      
Accounts receivable (4,855) (6,447) 3,090
Inventories 5,435 (6,516) 221
Prepaid expenses and other current assets (10,078) (4,607) (178)
Accounts payable 1,876 5,068 (4,623)
Accrued liabilities (20,830) 7,804 (5,171)
Deferred revenue 6,153 7,044 2,151
Other 366 8 (32)
NET CASH PROVIDED BY OPERATING ACTIVITIES 47,740 66,894 25,796
CASH FLOWS FROM INVESTING ACTIVITIES:      
Proceeds from maturities and sale of marketable securities 56,358 22,382 114,426
Purchases of marketable securities (50,364) (38,077) (32,430)
Capital expenditures (12,007) (8,339) (7,962)
Acquisitions, net of cash acquired (13,031)   (116,982)
Equity investment in and advances to affiliate (2,631) (2,281) (2,636)
Other (110) (136) (2)
NET CASH USED IN INVESTING ACTIVITIES (21,785) (26,451) (45,586)
CASH FLOWS FROM FINANCING ACTIVITIES:      
Taxes paid related to net share settlement of vested equity awards (3,603) (2,594) (1,780)
Proceeds from exercise of stock options 124 330 961
Proceeds from issuance of 2025 Convertible Notes 230,000    
Payment of debt issuance costs of 2025 Convertible Notes (7,305)    
Purchase of capped call on 2025 Convertible Notes (21,160)    
Repurchase of 2020 Convertible Notes (53,683)    
Proceeds from unwind of note hedges and warrants on 2020 Convertible Notes 3,122    
Repurchases of common stock (49,000)   (25,000)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES 98,495 (2,264) (25,819)
EFFECT OF EXCHANGE RATE CHANGES ON CASH (553) 718 (73)
Net change in cash and cash equivalents 123,897 38,897 (45,682)
Cash and cash equivalents at beginning of year 132,603 93,706 139,388
Cash and cash equivalents at end of year $ 256,500 $ 132,603 $ 93,706