Note 18 - Shareholders' Equity (Details) - Stock Option Activity (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock Option Activity [Abstract]
Options outstanding	265,437		342,437
Options outstanding, weighted average exercise price	$ 6.23		$ 6.09
Options outstanding, aggregate intrinsic value	$ 255,121		$ 114,125
Options outstanding, weighted average remaining contractual term	5 years 262 days	5 years 328 days	6 years 281 days
Exercisable at December 31, 2014	167,540
Exercisable at December 31, 2014	$ 5.52
Exercisable at December 31, 2014	274,297
Exercisable at December 31, 2014	6 years 211 days
Granted	49,900	12,000
Granted, weighted average exercise price	$ 6.34	$ 5.11
Granted, aggregate intrinsic value	40
Granted, weighted average remaining contractual term	9 years 120 days	9 years 233 days
Exercised	(5,700)	(4,000)
Exercised, weighted average exercise price	$ 6.31	$ 4.05
Exercised, aggregate intrinsic value	13,159	4,080
Exercised, weighted average remaining contractual term	7 years 40 days	8 years 62 days
Forfeited	(59,537)	(85,000)
Forfeited, weighted average exercise price	$ 9.76	$ 5.61
Forfeited, weighted average remaining contractual term	1 year 32 days	5 years 313 days
Options outstanding	250,100	265,437
Options outstanding, weighted average exercise price	$ 5.83	$ 6.23
Options outstanding, aggregate intrinsic value	$ 186,284	$ 255,121
Options outstanding, weighted average remaining contractual term	5 years 262 days	5 years 328 days	6 years 281 days