Note 10 - Fair Value of Financial Instruments: (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Industrial Revenue Bond [Member]
Long-term Debt, Fair Value	$ 4,300	$ 5,100
Line of Credit [Member]
Long-term Debt, Fair Value	219,900	170,400
Term Loan [Member]
Long-term Debt, Fair Value	$ 54,000	$ 57,600

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

No definition available.

Name:	us-gaap_LongTermDebtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant