v2.4.0.6

Stockholders Equity and Noncontrolling Interests - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012
Stockholders Equity [Line Items] |  |
Preferred stock, shares authorized | 1,000,000 | 1,000,000
Preferred stock, par value | $ 0.01 | $ 0.01
Number of shares of common stock purchased | 683,192 | 2,646,885
Repurchased common stock value | $ 22,593 | $ 58,383
Treasury stock, shares | 5,130,077 | 4,446,885
Percentage of noncontrolling interest acquired | 40.00% |
Redeemable noncontrolling interests recognized in acquisitions of Powertech Batteries and Energy Leader Batteries India Limited | $ 2,131 | $ 9,916
Maximum |  |
Stockholders Equity [Line Items] |  |
Preferred stock, shares authorized | 1,000,000 |

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