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Note 1 - Basis of Consolidation and Presentation (Detail) - Long-term Debt (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Total carrying amounts of long-term debt	$ 12,110	$ 12,436
Estimated fair value of long-term debt	$ 12,053	$ 12,490

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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