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Note 20 - Financial Instruments (Detail) - Summary of Company Financial Instruments (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Cash and Cash Equivalents [Member]
Carrying Amount	$ 27,898	$ 32,562
Fair Value	27,898	32,562
Restricted Cash [Member]
Carrying Amount	177	169
Fair Value	177	169
Short-term Investments [Member]
Carrying Amount	69,427	93,016
Fair Value	69,427	93,016
Available For Sale Securities [Member]
Carrying Amount	943	791
Fair Value	943	791
Restricted Assets [Member]
Carrying Amount	10,000
Fair Value	$ 10,000

The aggregate fair value as of the balance sheet date of financial instruments and other positions owned by the entity including: (1) mortgages, mortgage-backed and asset backed securities; (2) US government and agency obligations; (3) state and municipal government obligations; (4) other sovereign government debt; (5) corporate obligations; (6) corporate equities; (7) principal investments; (8) derivative contracts; and (9) physical commodities. Includes both pledged and unpledged holdings.

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