Note 17 - Share-based Compensation (Details) - Summary of Information Concerning Stock Options Outstanding Including the Related Transactions under the Stock Option Plans (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Sep. 30, 2013
Summary of Information Concerning Stock Options Outstanding Including the Related Transactions under the Stock Option Plans [Abstract]
Options Outstanding as of December 31, 2013		57,139
Options Outstanding as of December 31, 2013		$ 17.83
Granted	528
Granted	$ 20.80
Exercised	(4,571)
Exercised	$ 11.75
Forfeited and Expired	(161)
Forfeited and Expired	$ 15.85
Options Outstanding as of March 31, 2014	52,935	57,139
Options Outstanding as of March 31, 2014	$ 18.39	$ 17.83
Options Outstanding as of March 31, 2014	4 years 346 days
Options Outstanding as of March 31, 2014	$ 201,401
Options Expected to Vest as of March 31, 2014	52,817
Options Expected to Vest as of March 31, 2014	$ 18.40
Options Expected to Vest as of March 31, 2014	4 years 346 days
Options Expected to Vest as of March 31, 2014	200,454
Options Exercisable as of March 31, 2014	40,470
Options Exercisable as of March 31, 2014	$ 19.78
Options Exercisable as of March 31, 2014	3 years 328 days
Options Exercisable as of March 31, 2014	$ 114,511