Note 13 - Extraordinary Items (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Mar. 31, 2012
Extraordinary and Unusual Items [Abstract]
Extraordinary Item, Gain (Loss), Net of Tax, Attributable to Parent	$ 455
Income Tax Expense (Benefit), Extraordinary Items	$ 245

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit allocated to Income or Loss from extraordinary items.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 10

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32672-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 20

-Section 45

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=18498875&loc=d3e38679-109324

Name:	us-gaap_IncomeTaxExpenseBenefitExtraordinaryItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration