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Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012 | Mar. 31, 2011
Losses attributable to redeemable noncontrolling interests | $ 1,429 | $ 170 |
Pension funded status adjustment, tax benefit expense | 1,195 | 1,841 | 794
Net unrealized gain (loss) on derivative instruments, tax benefit expense | 1,134 | 1,909 | 5,251
Foreign currency translation adjustment, related to redeemable noncontrolling interests | $ 1,159 | $ 36 |

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