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Note 1 - Summary of Significant Accounting Policies (Detail) - Long-term Debt (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Total carrying amount of long-term debt	$ 12,436	$ 14,486
Estimated fair value of long-term debt	$ 12,490	$ 14,498

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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