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Note 6 - Long-Term Debt (Detail) - Future maturities of long-term debt (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
2013	$ 24,750
2014	24,750
2015	24,750
2016	74,250
	$ 148,500	$ 175,000

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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