Note 16 - Employee Benefit Plans (Details) - Components of the Net Periodic Benefit Cost of the Defined Benefit Plan - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Components of net periodic benefit cost:
Service cost	$ 0	$ 0	$ 0
Interest cost	83	90	83
Expected return on plan assets	0	0	0
Amortization of prior service cost	0	0	0
Amortization of net losses	59	36	60
Net periodic benefit cost	$ 142	$ 126	$ 143