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Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified | 9 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011
Cash flows from operating activities: |  |
Net loss | $ (46,360) | $ (115,660)
Adjustments to reconcile net (loss) to net cash (used in) operations: |  |
Depreciation and amortization | 10,143 | 10,875
Stock-based compensation expense | 5,968 | 7,697
Write-off of advanced payment to The Switch |  | 20,551
Restructuring charges, net of payments | 261 | 2,721
Impairment of long-lived and intangible assets | 4,507 | 2,829
Provision for excess and obsolete inventory | 957 | 2,150
Adverse purchase commitment losses (recoveries), net | (8,428) | 73
Loss on minority interest investments | 1,914 | 1,614
Change in fair value of derivatives and warrants | (6,114) |
Non-cash interest expense | 8,404 |
Other non-cash items | 1,790 | 613
Changes in operating asset and liability accounts: |  |
Accounts receivable | 6,085 | (1,262)
Inventory | (8,173) | (10,419)
Prepaid expenses and other current assets | 4,699 | 3,244
Accounts payable and accrued expenses | (20,330) | (63,554)
Deferred revenue | 3,986 | 5,254
Net cash used in operating activities | (40,691) | (133,274)
Cash flows from investing activities: |  |
Purchase of property, plant and equipment | (1,259) | (9,332)
Proceeds from the maturity of marketable securities | 5,297 | 110,667
Change in restricted cash | 653 | (6,036)
Purchase of intangible assets |  | (3,893)
Purchase of minority investments |  | (1,800)
Advanced payment for planned acquisition |  | (20,551)
Change in other assets |  | (734)
Net cash provided by investing activities | 4,691 | 68,321
Cash flows from financing activities: |  |
Employee taxes paid related to net settlement of equity awards | (42) | (271)
Repayment of debt | (769) |
Proceeds from the issuance of debt, net of expenses | 32,895 |
Proceeds from exercise of employee stock options and ESPP | 178 | 150
Net cash provided by (used in) financing activities | 32,262 | (121)
Effect of exchange rate changes on cash and cash equivalents | (84) | (104)
Net decrease in cash and cash equivalents | (3,822) | (65,178)
Cash and cash equivalents at beginning of period | 46,279 | 123,783
Cash and cash equivalents at end of period | 42,457 | 58,605
Supplemental schedule of cash flow information: |  |
Cash paid for income taxes, net of refunds | (704) | 13,482
Issuance of common stock to settle liabilities | 10,406 | 586
Cash paid for interest expense | $ 543 |

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