Note 9 - Common Stock (Detail) - Restricted Stock Activity (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Restricted Stock Shares	226	319
Weighted Average Grant Date Value (in Dollars per share)	$ 2.67	$ 2.52
Restricted Stock Shares, Granted	9	72
Weighted Average Grant Date Value, Granted (in Dollars per share)	$ 5.72	$ 4.41
Restricted Stock Shares, Vested	(49)	(65)
Weighted Average Grant Date Value, Vested (in Dollars per share)	$ 3.35	$ 4.63
Restricted Stock Shares, Cancelled/Forfeited	(74)	(100)
Weighted Average Grant Date Value, Cancelled/Forfeited (in Dollars per share)	$ 1.82	$ 2.17
Restricted Stock Shares	112	226
Weighted Average Grant Date Value (in Dollars per share)	$ 3.17	$ 2.67