Note 6 - Common Stock and Stock Options (Detail) - Summary of PARS activity: (Performance Accelerated Restricted Stock Plan (PARS) [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2012
Performance Accelerated Restricted Stock Plan (PARS) [Member]
Shares	508
Weighted Average Grant Date Fair Value (in Dollars per share)	$ 27.94
Granted	254
Granted (in Dollars per share)	$ 4.98
Restrictions released	(194)
Restrictions released (in Dollars per share)	$ 38.05
Forfeited	(354)
Forfeited (in Dollars per share)	$ 15.45
Shares	214
Weighted Average Grant Date Fair Value (in Dollars per share)	$ 12.15

Note 6 - Common Stock and Stock Options (Detail) - Summary of PARS activity: (Performance Accelerated Restricted Stock Plan (PARS) [Member], USD $)
In Thousands, except Per Share data, unless otherwise specified

12 Months Ended

Dec. 31, 2012

Performance Accelerated Restricted Stock Plan (PARS) [Member]

508

Weighted Average Grant Date Fair Value (in Dollars per share)

$ 27.94

Granted

254

Granted (in Dollars per share)

$ 4.98

Restrictions released

(194)

Restrictions released (in Dollars per share)

$ 38.05

Forfeited

(354)

Forfeited (in Dollars per share)

$ 15.45

214

Weighted Average Grant Date Fair Value (in Dollars per share)

$ 12.15

- Definition

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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- Definition

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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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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