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Consolidated Statements of Shareholders' Equity (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Mar. 31, 2011	Mar. 31, 2010
Cash dividends per share		$ 0.06
Net actuarial gains and prior service cost on curtailment of defined benefit pension plans, net of taxes	$ 467	$ 104
Retained earnings
Cash dividends per share		$ 0.06
Accumulated other comprehensive income (loss)
Net actuarial gains and prior service cost on curtailment of defined benefit pension plans, net of taxes	$ 467	$ 104

Tax effects of the increase (decrease) to accumulated comprehensive income during the period related to benefit plans. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.

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