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Income Taxes - Components of the income tax provision (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Current taxes
Federal	$ 9,588	$ 9,138	$ 11,007
State	913	870	1,052
Total current taxes	10,501	10,008	12,059
Deferred taxes
Federal	(329)	(270)	317
State	(31)	(26)	30
Total deferred taxes	(360)	(296)	347
Total provision for income taxes	$ 10,141	$ 9,712	$ 12,406

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- Definition

The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted federal tax law to the domestic taxable Income or Loss from continuing operations.

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