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INCOME TAXES (Details) (USD $)	3 Months Ended		6 Months Ended
INCOME TAXES (Details) (USD $)	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
INCOME TAXES [Abstract]
Income tax provision	$ 8,012,000	$ 1,918,000	$ 9,711,000	$ 3,196,000
Effective income tax rate (in hundredths)	38.00%	37.00%	38.00%	37.00%
Discrete tax expense	$ 6,700,000		$ 6,700,000

- Definition

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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- Definition

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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