Note 5 - Stock-based Compensation (Detail) - Summary of restricted shares (Incentive Plan 2007 [Member], USD $)	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Incentive Plan 2007 [Member]
Restricted stock - common:
Outstanding - beginning of period	0	0
Outstanding - beginning of period (in Dollars per share)	$ 0
Granted	382,062	0
Granted (in Dollars per share)	$ 4.43
Outstanding - end of period	382,062	0
Outstanding - end of period (in Dollars per share)	$ 4.43

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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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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