Note 9 - Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Income Tax Expense (Benefit)	$ (21,053)	$ 819	$ (21,098)	$ 1,070
Effective Income Tax Rate, Continuing Operations	27.50%		27.50%
Goodwill, Impairment Loss	78,609		78,609
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate			35.00%
Tax Effect of Extraordinary Item, Gain (Loss)				260
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	21		21
Resulting From Goodwill and Other Intangible Asset Impairment Loss [Member]
Effective Income Tax Rate, Continuing Operations			27.70%
Excluding the Discrete Tax Items Associated With The Goodwill Write-Off and a Discrete Tax Benefit [Member]
Effective Income Tax Rate, Continuing Operations			40.00%
Excluding the Discrete Tax Benefit [Member]
Effective Income Tax Rate, Continuing Operations				38.60%
Resulting From Goodwill and Other Intangible Asset Impairment Loss [Member]
Income Tax Expense (Benefit)	(21,761)		(21,761)
Related to a Tax Return to Provision Adjustment [Member]
Income Tax Expense (Benefit)	(112)		(112)	(202)
Including Tax Expense Relating to an Extraordinary Gain [Member]
Income Tax Expense (Benefit)				$ 1,330