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Note 8 - Liabilities (Detail) - Future principal payments due on notes payable (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012
2012 (remaining six months)	$ 1,000
2013	4,000
2014	4,000
2015	6,000
	$ 15,000

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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