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Note 4 - Stock-Based Compensation (Detail) - Restricted Stock Activity (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Number of Stock Awards, Unvested	764	468	771	774
Weighted Average Grant Date Fair Value, Unvested (in Dollars per share)	$ 6.62	$ 8.27	$ 8.05	$ 7.76
Number of Stock Awards, Granted	383	224	370
Weighted Average Grant Date Fair Value, Granted (in Dollars per share)	$ 4.48	$ 9.33	$ 6.59
Number of Stock Awards, Vested	(40)	(238)	(228)
Weighted Average Grant Date Fair Value, Vested (in Dollars per share)	$ 4.19	$ 4.01	$ 3.07
Number of Stock Awards, Forfeited	(47)	(289)	(145)
Weighted Average Grant Date Fair Value, Forfeited (in Dollars per share)	$ 7.64	$ 12.04	$ 10.60

X

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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