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Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Jun. 30, 2012 | Jun. 30, 2011
Cash flows from operating activities: |  |
Net loss | $ (10,275) | $ (37,679)
Adjustments to reconcile net (loss) income to net cash (used in) provided by operations: |  |
Depreciation and amortization | 3,344 | 3,242
Stock-based compensation expense | 1,994 | 3,466
Restructuring charges, net of payments | (39) |
Provision for excess and obsolete inventory | 250 | 413
Adverse purchase commitment losses (recoveries), net | (7,301) | 1,071
Loss on minority interest investments | 812 |
Change in fair value of derivatives and warrants | 2,388 |
Non-cash interest expense | 2,282 |
Other non-cash items | 200 | 827
Changes in operating asset and liability accounts: |  |
Accounts receivable | 4,132 | 670
Inventory | 136 | (5,324)
Prepaid expenses and other current assets | 848 | (7,812)
Accounts payable and accrued expenses | (6,449) | (19,732)
Deferred revenue | (3,913) | 3,084
Net cash (used in) operating activities | (11,591) | (57,774)
Cash flows from investing activities: |  |
Purchase of property, plant and equipment | (88) | (4,498)
Proceeds from the maturity of marketable securities | 100 | 90,800
Increase in restricted cash | (6,858) | (3,763)
Purchase of intangible assets |  | (240)
Purchase of minority investments |  | (1,800)
Advanced payment for planned acquisition |  | (20,551)
Change in other assets |  | (195)
Net cash (used in) provided by investing activities | (6,846) | 59,753
Cash flows from financing activities: |  |
Employee taxes paid related to net settlement of equity awards | (36) | (271)
Proceeds from the issuance of debt, net of expenses | 32,961 | 4,626
Proceeds from exercise of employee stock options and ESPP |  | 21
Net cash provided by financing activities | 32,925 | 4,376
Effect of exchange rate changes on cash and cash equivalents | (280) | 747
Net increase in cash and cash equivalents | 14,208 | 7,102
Cash and cash equivalents at beginning of period | 46,279 | 123,783
Cash and cash equivalents at end of period | 60,487 | 130,885
Supplemental schedule of cash flow information: |  |
Cash paid for income taxes, net of refunds | (828) | 12,485
Issuance of common stock to settle liabilities | $ 1,016 | $ 205

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