Note 22 - Employee Benefit Plan (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	60.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	3.00%	2.00%	2.00%
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 1,000	$ 600	$ 500
Deposits And Other Assets Noncurrent	18,553	17,968
Severance Costs	2,300	2,500	2,100
Gain (Loss) Of Severance Fund	300	100	$ (1,500)
Israeli Severance Funds [Member]
Deposits And Other Assets Noncurrent	$ 12,800	$ 14,200