Note 10 - Stock Option Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015		Dec. 31, 2014
Balance, options outstanding (in shares)	822,500		842,500
Balance, weighted-average exercise price (in dollars per share)	$ 11.82		$ 11.84
Balance	4 years 109 days		3 years 146 days
Balance	$ 7,181
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	0		0
Granted (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	0
Exercised (in dollars per share)
Forfeited or expired (in shares)	(315,000)
Forfeited or expired (in dollars per share)	$ (12.09)
Forfeited or expired	$ 3,247
Balance, options outstanding (in shares)	507,500	[1]	822,500
Balance, weighted-average exercise price (in dollars per share)	$ 11.66		$ 11.82
Balance	$ 3,934		$ 7,181
Options exercisable at December 31, 2015 (in shares)	507,500
Options exercisable at December 31, 2015 (in dollars per share)	$ 11.66
Exercisable at December 31, 2015	4 years 109 days
Exercisable at December 31, 2015	$ 3,934

[1] Exercise prices vary from $9.88 to $12.51, and expiration dates vary from January 2020 to December 2021.