Note 7 - Stock-Based Compensation (Detail) - Stock Option Activity (USD $)	1 Months Ended	12 Months Ended
	Jun. 29, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2011	Dec. 31, 2010
Outstanding at beginning of year (in Shares)		1,902,000		2,856,125	3,051,125
Outstanding at beginning of year		$ 11.51		$ 14.68	$ 15.28
Granted (in Shares)		70,000		60,000	110,000
Granted		$ 3.55		$ 8.16	$ 5.71
Exchanged for RSUs (in Shares)				(814,500)
Exchanged for RSUs				$ 22.06
Exercised (in Shares)	814,500			(81,500)	(1,500)
Exercised				$ 4.61	$ 6.35
Expired or forfeited (in Shares)		(58,000)		(118,125)	(303,500)
Expired or forfeited		$ 6.33		$ 18.48	$ 17.51
Outstanding at end of year (in Shares)		1,914,000	1,902,000	1,902,000	2,856,125
Outstanding at end of year		$ 11.38	$ 11.51	$ 11.51	$ 14.68
Exercisable at end of year (in Shares)		1,833,500	1,718,062	1,718,062	2,277,625
Exercisable at end of year		$ 11.48	$ 11.72	$ 11.72	$ 14.98
Weighted-average fair value of options granted during the year		$ 1.72	$ 4.08	$ 4.08	$ 3.38