Note 16 - Share-based Compensation (Details) - Summary of the Status of Non-Vested Time-Based Restricted Stock and Restricted Stock Units (Time-Based Restricted Stock and Restricted Stock Units [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Time-Based Restricted Stock and Restricted Stock Units [Member]
Note 16 - Share-based Compensation (Details) - Summary of the Status of Non-Vested Time-Based Restricted Stock and Restricted Stock Units [Line Items]
Non-vested shares and share units at December 31, 2014	5,737
Non-vested shares and share units at December 31, 2014	$ 15.43
Granted	1,138
Granted	$ 22.88
Vested	(1,454)
Vested	$ 13.48
Non-vested shares and share units at March 31, 2015	5,421
Non-vested shares and share units at March 31, 2015	$ 17.52