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Nature Of The Business And Operations And Liquidity (Details) (USD $) | 12 Months Ended | 24 Months Ended |  |  | 0 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Mar. 31, 2013 employee | Mar. 31, 2012 | Mar. 31, 2011 | Mar. 31, 2013 employee | Jun. 30, 2012 | Mar. 31, 2010 | Apr. 04, 2012 Senior Convertible Note [Member] | Jun. 05, 2012 Senior Secured Term Loan [Member]
Description Of Business [Line Items] |  |  |  |  |  |  |  |
Cash and cash equivalents | $ 39,243,000 | $ 46,279,000 | $ 123,783,000 | $ 39,243,000 |  | $ 87,594,000 |  |
Cash used for operations | (45,271,000) | (141,042,000) | (22,821,000) |  |  |  |  |
Payments to settle adverse purchase commitments | 14,300,000 |  |  |  |  |  |  |
Debt, face amount |  |  |  |  | 35,000,000 |  | 25,000,000 | 10,000,000
Accumulated deficit | (800,131,000) | (734,000,000) |  | (800,131,000) |  |  |  |
Reduction of principle from conversion of shares | $ 9,600,000 |  |  |  |  |  |  |
Reduction in global workforce, percentage | 19.00% |  |  | 57.00% |  |  |  |
Number of workforce persons | 362 |  |  | 362 |  |  |  |
Interest rate percentage |  |  |  |  |  |  | 7.00% |

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6361293&loc=d3e6676-107765 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3044-108585 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 + Details
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