Note 3 - Acquisitions (Detail) - Purchase Price Allocation (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	May 31, 2012
Goodwill	$ 43,575
SWH, Inc [Member]
Cash		3,561
Accounts receivable		7,233
Prepaid expense and other current assets		782
Property and equipment		29,787
Identifiable intangible assets	27,300	27,300
Other long-term assets		714
Accounts payable		(1,036)
Accrued expenses and other current liabilities		(3,464)
Long-term debt		(16,000)
Capital lease obligations		(1,622)
Deferred tax liabilities		(5,510)
Total net identifiable assets		41,745
Goodwill	27,000	27,001
Net assets acquired		$ 68,746