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v2.3.0.11

Changes in Number of Shares Issued (Detail) (Common Stock) | 12 Months Ended
--- | ---
Mar. 31, 2011 | Mar. 31, 2010 | Mar. 31, 2009
Stockholders Equity Note [Line Items] |  |  |
Beginning balance | 110,229,948 | 92,217,067 | 92,193,067
Issuance of common stock | 0 | 18,000,000 | 0
Exercise of stock options | 14,000 | 11,000 | 24,000
Conversion of convertible bonds | 1,898 | 1,881 | 0
Ending balance | 110,245,846 |  | 92,217,067

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- Definition Number of shares issued during the period as a result of the conversion of convertible securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 4, 5 + Details
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