Note 11 - Benfit Plans (Detail) - Pension Plan’s Assets Measured at Fair Value on Recurring Basis (USD $)	Dec. 31, 2012	Dec. 31, 2011
Available for sale securities, Total	$ 4,822	$ 3,734
Debt Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Available for sale securities	601	335
Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Available for sale securities	1,158	1,013
Debt Securities [Member]
Available for sale securities	1,759	1,348
Equity Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Available for sale securities	3,063	2,386
Equity Securities [Member]
Available for sale securities	3,063	2,386
Fair Value, Inputs, Level 1 [Member]
Available for sale securities, Total	3,664	2,721
Fair Value, Inputs, Level 2 [Member]
Available for sale securities, Total	$ 1,158	$ 1,013

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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+ Details

- Definition

Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer.

+ References

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+ Details