Note 11 - Accrued Pension Liabilities (Details) - Net Amounts Recognized in Consolidated Balance Sheets and Accumulated Other Comprehensive Income (Loss) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Net Amounts Recognized in Consolidated Balance Sheets and Accumulated Other Comprehensive Income (Loss) [Abstract]
Noncurrent liabilities	$ 892	$ 1,089
Net amounts recognized in the consolidated balance sheets	892	1,089
Net amounts recognized in accumulated other comprehensive income as of December 31, 2015 and 2014 consist of:
Net actuarial loss	(351)	(435)
Net amounts recognized in accumulated other comprehensive loss	$ (351)	$ (435)