Note 15 - Stock Based Compensation (Tables)

9 Months Ended

Sep. 30, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Compensation, Activity [Table Text Block]

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2015		2014		2015		2014
	(Dollars in thousands)
Stock option grant expense	$	3,544	$	1,521	$	5,043	$	2,723
Restricted stock awards expense		454		683		1,546		2,031
Total stock based compensation	$	3,998	$	2,204	$	6,589	$	4,754