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Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Operating activities    
Net loss $ (1,793) $ (6,228)
Income from discontinued operations    651
Loss from continuing operations (1,793) (6,879)
Adjustments to reconcile loss from continuing operations to net cash used in operating activities    
Restructuring and related charges 1,125 2,346
Payments and settlements for restructuring (3,707) (344)
Asset impairments and related charges 208  
Depreciation 700 1,012
Amortization 1,129 1,531
Share based compensation 353 1,481
Changes in operating assets and liabilities:    
Accounts receivable (2,196) (2,259)
Inventories 58 (5,753)
Accounts payable (1,316) 7,277
Deferred revenue (2,854) (5,399)
Accrued liabilities (10,717) (578)
Income taxes payable (receivable) 68 (951)
Other charges, net (865) (163)
Net cash used in operating activities from continuing operations (19,807) (8,679)
Net cash used in operating activities from discontinued operations   (12,555)
Net cash used in operating activities (19,807) (21,234)
Investing activities    
Proceeds from sale of marketable securities 4,347 15
Additional investments in corporate-owned life insurance policies and marketable securities (4) (57)
Capital expenditures (1,526) (756)
Net cash provided by (used in) investing activities from continuing operations 2,817 (798)
Net cash provided by (used in) investing activities from discontinued operations      
Net cash provided by (used in) investing activities 2,817 (798)
Financing activities    
Principal payments under long-term obligations (198) (330)
Exercise of employee stock options 67 210
Repurchase of common shares to satisfy employee tax withholding (40) (565)
Net cash used in financing activities from continuing operations (171) (685)
Net cash used in financing activities from discontinued operations   (20)
Net cash used in financing activities (171) (705)
Effect of exchange rate changes on cash (90) 58
Cash flows used in continuing operations (17,251) (10,104)
Cash flows used in discontinued operations   (12,575)
Net decrease in cash and cash equivalents (17,251) (22,679)
Cash and cash equivalents at beginning of period 97,587 74,354
Cash and cash equivalents at end of period $ 80,336 $ 51,675